Added explicit 'void' to function that takes no argument

This is the correct way to tell that a function takes no
arguments, because an empty parameter list tells the compiler
that it is not yet defined, and is tolerated only for
compatibility with very old C compilers for whom prototypes
were not yet a defined language element.

WINGs/notification.c

@@ -437,7 +437,7 @@ WMEnqueueCoalesceNotification(WMNotificationQueue * queue,
 	}
 }
 
-void W_FlushASAPNotificationQueue()
+void W_FlushASAPNotificationQueue(void)
 {
 	WMNotificationQueue *queue = notificationQueueList;
 
@@ -451,7 +451,7 @@ void W_FlushASAPNotificationQueue()
 	}
 }
 
-void W_FlushIdleNotificationQueue()
+void W_FlushIdleNotificationQueue(void)
 {
 	WMNotificationQueue *queue = notificationQueueList;
 

WINGs/wcolorwell.c

@@ -126,7 +126,7 @@ static void activatedObserver(void *data, WMNotification * notification)
 	 */
 }
 
-static WMArray *getXdndTypeArray()
+static WMArray *getXdndTypeArray(void)
 {
 	WMArray *types = WMCreateArray(1);
 	WMAddToArray(types, XDND_COLOR_DATA_TYPE);

WINGs/wtext.c

@@ -2911,14 +2911,14 @@ WMArray *getStreamObjects(WMText * tPtr, int sel)
 
 #define XDND_TEXT_DATA_TYPE "text/plain"
 #define XDND_COLOR_DATA_TYPE "application/X-color"
-static WMArray *getXdndSourceTypeArray()
+static WMArray *getXdndSourceTypeArray(void)
 {
 	WMArray *types = WMCreateArray(1);
 	WMAddToArray(types, XDND_TEXT_DATA_TYPE);
 	return types;
 }
 
-static WMArray *getXdndDestinationTypeArray()
+static WMArray *getXdndDestinationTypeArray(void)
 {
 	WMArray *types = WMCreateArray(1);
 	WMAddToArray(types, XDND_COLOR_DATA_TYPE);

WPrefs.app/WPrefs.c

@@ -102,7 +102,7 @@ static void loadConfigurations(WMScreen * scr, WMWindow * mainw);
 
 static void savePanelData(Panel * panel);
 
-static void prepareForClose();
+static void prepareForClose(void);
 
 void quit(WMWidget * w, void *data)
 {
@@ -188,7 +188,7 @@ static void undoAll(WMWidget * w, void *data)
 	}
 }
 
-static void prepareForClose()
+static void prepareForClose(void)
 {
 	int i;
 

src/defaults.c

@@ -753,7 +753,7 @@ WDefaultEntry optionList[] = {
 	    &wPreferences.cycle_ignore_minimized, getBool, NULL, NULL, NULL}
 };
 
-static void initDefaults()
+static void initDefaults(void)
 {
 	unsigned int i;
 	WDefaultEntry *entry;

src/keybind.h

@@ -122,6 +122,6 @@ typedef struct WShortKey {
     KeyCode keycode;
 } WShortKey;
 
-void wKeyboardInitialize();
+void wKeyboardInitialize(void);
 
 #endif /* WMKEYBIND_H */

src/moveres.c

@@ -535,7 +535,7 @@ static void drawFrames(WWindow * wwin, WMArray * array, int dx, int dy)
 	}
 }
 
-static void flushMotion()
+static void flushMotion(void)
 {
 	XEvent ev;
 

src/winspector.h

@@ -30,7 +30,7 @@ void wHideInspectorForWindow(WWindow *wwin);
 
 void wUnhideInspectorForWindow(WWindow *wwin);
 
-void wDestroyInspectorPanels();
+void wDestroyInspectorPanels(void);
 
 WWindow *wGetWindowOfInspectorForWindow(WWindow *wwin);
 

util/wmsetbg.c

@@ -96,7 +96,7 @@ typedef struct BackgroundTexture {
 	int height;
 } BackgroundTexture;
 
-void initXinerama()
+void initXinerama(void)
 {
 	xineInfo.screens = NULL;
 	xineInfo.count = 0;
@@ -1121,13 +1121,13 @@ char *getFullPixmapPath(const char *file)
 	return wstrdup(file);
 }
 
-void wAbort()
+void wAbort(void)
 {
 	wfatal("aborting");
 	exit(1);
 }
 
-void print_help()
+void print_help(void)
 {
 	printf("Usage: %s [options] [image]\n", __progname);
 	puts("Sets the workspace background to the specified image or a texture and");

util/wxcopy.c

@@ -33,7 +33,7 @@
 
 extern char *__progname;
 
-void print_help()
+void print_help(void)
 {
 	printf("Usage: %s [OPTIONS] [FILE]\n", __progname);
 	puts("Copies data from FILE or stdin into X cut buffer.");

util/wxpaste.c

@@ -37,7 +37,7 @@
 
 extern char *__progname;
 
-void print_help()
+void print_help(void)
 {
 	printf("Usage: %s [OPTIONS] [FILE]\n", __progname);
 	puts("Copies data from X selection or cutbuffer to FILE or stdout.");

wrlib/load.c

@@ -97,7 +97,7 @@ char **RSupportedFileFormats(void)
 	return tmp;
 }
 
-static void init_cache()
+static void init_cache(void)
 {
 	char *tmp;