clib-uninstall: fix possible memory leak (#324)

Author: peter15914

src/clib-uninstall.c

@@ -128,7 +128,7 @@ static char *get_uninstall_target(const char *name, const char *version) {
 
   size = asprintf(&target, "cd %s && %s", dir, val);
   if (-1 == size)
-    return NULL;
+    target = NULL;
 
 done:
   if (root)