mesa: Fix a NULL deref in glDeleteFragmentShaderATI(badname);

Fixes piglit ati-fs-bad-delete. Caught by clang.
2009-12-22 12:38:11 -08:00
parent fbeceec97b
commit b08ed4f595
1 changed files with 5 additions and 3 deletions
@@ -290,9 +290,11 @@ _mesa_DeleteFragmentShaderATI(GLuint id)

      /* The ID is immediately available for re-use now */
      _mesa_HashRemove(ctx->Shared->ATIShaders, id);
-      prog->RefCount--;
-      if (prog->RefCount <= 0) {
-         _mesa_free(prog);
+      if (prog) {
+	 prog->RefCount--;
+	 if (prog->RefCount <= 0) {
+	    _mesa_free(prog);
+	 }
      }
   }
 }