Git: Initialize members of StashInfo

Change-Id: I20e644d61163bb91addcfe16a58692cfacb988d3
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/gitclient.h

@@ -114,10 +114,10 @@ public:
         void stashPrompt(const QString &command, const QString &statusOutput, QString *errorMessage);
         void executeStash(const QString &command, QString *errorMessage);
 
-        StashResult m_stashResult;
+        StashResult m_stashResult = NotStashed;
         QString m_message;
         QString m_workingDir;
-        StashFlag m_flags;
+        StashFlag m_flags = Default;
         PushAction m_pushAction = NoPush;
     };