Set GITERR_INVALID when encountering a NULL remote URL
diff --git a/src/remote.c b/src/remote.c
index 187e395..714e2f0 100644
--- a/src/remote.c
+++ b/src/remote.c
@@ -133,6 +133,7 @@ int git_remote_load(git_remote **out, git_repository *repo, const char *name)
goto cleanup;
if (!val) {
+ geterr_set(GITERR_INVALID, "Malformed remote '%s' - missing URL", name);
error = -1;
goto cleanup;
}