Fix a crash in the JPEG loader when meeting with ENOENT.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@3401 92316355-f0b4-4df1-b90c-862c8a59935f

pipi/codec/jpeg.c

@@ -68,12 +68,12 @@ pipi_image_t *pipi_load_jpeg(const char *name)
     unsigned int i, j, k = 0;
     FILE *fp;
 
+    if(setjmp(jerr.setjmp_buffer))
+        return NULL;
+
     fp = fopen(name, "rb");
     if(!fp)
-        goto end;
-
-    if(setjmp(jerr.setjmp_buffer))
-        goto end;
+        return NULL;
 
     cinfo.err = jpeg_std_error(&jerr.pub);
     jerr.pub.error_exit = error_msg;