[Libguestfs] [PATCH] tests: c-api: do not crash w/ missing hash entry

[Pino Toscano]

If an hash does not have the requested key, just error out cleanly
instead of crashing when trying to compare a null string.
---
 tests/c-api/tests-main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tests/c-api/tests-main.c b/tests/c-api/tests-main.c
index 49d36b9..e2e86f5 100644
--- a/tests/c-api/tests-main.c
+++ b/tests/c-api/tests-main.c
@@ -321,6 +321,11 @@ check_hash (char **ret, const char *key, const char *expected)
 {
   const char *value = get_key (ret, key);
 
+  if (value == NULL) {
+    fprintf (stderr, "test failed: hash key %s not found\n", key);
+    return -1;
+  }
+
   if (STRNEQ (value, expected)) {
     fprintf (stderr, "test failed: hash key %s = \"%s\" is not expected value \"%s\"\n",
              key, value, expected);
-- 
1.9.3