- fix for 0 sized gif images too

- fixed wrong test for 0 size in nxpm.c

ChangeLog

@@ -23,7 +23,7 @@ Changes since version 0.80.1:
 - Added kinput2 bug workaround in stock WMWindowAttributes (Seiichi SATO 
   <sato@cvs-net.co.jp>)
 - Added Belarusian translation (Ihar Viarheichyk <iverg@mail.ru>)
-- Fixed wrlib to not try to load braindead images with 0x0 size
+- Fixed wrlib not to load braindead images with 0 sized width or height
 - Removed double no-position-display when cycling position display types
   with Shift key while moving windows.
 - Changed the default position display while moving a window to 'Center'.

wrlib/gif.c

@@ -62,7 +62,7 @@ RLoadGIF(RContext *context, char *file, int index)
     RErrorCode = RERR_BADINDEX;
 
     gif = DGifOpenFileName(file);
-    
+
     if (!gif) {
 	switch (GifLastError()) {
 	 case D_GIF_ERR_OPEN_FAILED:
@@ -78,6 +78,12 @@ RLoadGIF(RContext *context, char *file, int index)
 	return NULL;
     }
 
+    if (gif->Image.Width<1 || gif->Image.Height<1) {
+        DGifCloseFile(gif);
+	RErrorCode = RERR_BADIMAGEFILE;
+        return NULL;
+    }
+
     colormap = gif->SColorMap;
 
     i = 0;
@@ -206,7 +212,7 @@ giferr:
      default:
 	RErrorCode = RERR_BADIMAGEFILE;
 	break;
-    }    
+    }
 bye:
     if (image)
 	RReleaseImage(image);

wrlib/nxpm.c

@@ -86,9 +86,9 @@ RGetImageFromXPMData(RContext *context, char **data)
     int w, h, ccount, csize;
 
     if (sscanf(data[line++], "%i %i %i %i", &w, &h, &ccount, &csize)!=4
-	|| w <= 1 || h <= 1 || ccount <= 0 || csize <= 0)
+	|| w <= 0 || h <= 0 || ccount <= 0 || csize <= 0)
 	goto bad_format;
-    
+
     if (csize!=1 && csize!=2) 
 	goto bad_format;
 

wrlib/tiff.c

@@ -81,10 +81,10 @@ RLoadTIFF(RContext *context, char *file, int index)
 	TIFFClose(tif);
 	return NULL;
     }
-      
+
     /* read data */
     ptr = data = (uint32*)_TIFFmalloc(width * height * sizeof(uint32));
-    
+
     if (!data) {
 	RErrorCode = RERR_NOMEMORY;
     } else {