Make KGTK::PR_FindFunctionSymbol more robust

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kgtk-qt3@1243493 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

gtk2/kgtk2.c

@@ -1946,7 +1946,14 @@ void * PR_FindFunctionSymbol(struct PR_LoadLibrary *lib, const char *raw_name)
             rv=real_dlsym(RTLD_NEXT, raw_name);
     }
 
-    return rv ? rv : realFunction(lib, raw_name);
+#ifdef KGTK_DEBUG_DLSYM
+    printf("KGTK::PR_FindFunctionSymbol found? %d\n", (rv || realFunction) ? 1 : 0);
+#endif
+
+    if ((rv != NULL) || (realFunction != NULL))
+        return rv ? rv : realFunction(lib, raw_name);
+    else
+        return NULL;
 }
 
 #ifdef HAVE_DLVSYM