Fix potential core dumped for strrchr (#546)

diff --git a/cJSON_Utils.c b/cJSON_Utils.c
index 8e70e003146183dc63b6d441a2b4305ba3cb5d74..c7c64391d56d86bc6cdc3700c97a21fbf22400a2 100644 (file)
--- a/cJSON_Utils.c
+++ b/cJSON_Utils.c
@@ -960,7 +960,9 @@ static int apply_patch(cJSON *object, const cJSON *patch, const cJSON_bool case_
 
     /* split pointer in parent and child */
     parent_pointer = cJSONUtils_strdup((unsigned char*)path->valuestring);
-    child_pointer = (unsigned char*)strrchr((char*)parent_pointer, '/');
+    if (parent_pointer) {
+        child_pointer = (unsigned char*)strrchr((char*)parent_pointer, '/');
+    }
     if (child_pointer != NULL)
     {
         child_pointer[0] = '\0';