* Better error recovery in genethumb.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2264 92316355-f0b4-4df1-b90c-862c8a59935f

genethumb/genethumb.c

@@ -72,7 +72,20 @@ int main(int argc, char *argv[])
             dstname = argv[i];
     }
 
+    if(!srcname || !dstname)
+    {
+        fprintf(stderr, "%s: too few arguments\n", argv[0]);
+        printf(MOREINFO, argv[0]);
+        return EXIT_FAILURE;
+    }
+
     src = pipi_load(srcname);
+    if(!src)
+    {
+        fprintf(stderr, "%s: could not load `%s'\n", argv[0], srcname);
+        return EXIT_FAILURE;
+    }
+
     dst = pipi_resize(src, w, h);
     if(bpp == 16)
         pipi_dither_24to16(dst);