Git: Do not suggest to continue command when commit editor is active

When executing mergetool from the commit editor it is unlikely that the user
wants to do anything but to commit.

Change-Id: I1302951c4afee554b35a261d60f402b56c077681
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

src/plugins/git/gitplugin.h

@@ -91,6 +91,7 @@ public:
 
     GitClient *client() const;
     Gerrit::Internal::GerritPlugin *gerritPlugin() const;
+    bool isCommitEditorOpen() const;
 
 public slots:
     void startCommit();
@@ -190,7 +191,6 @@ private:
                                                  const Core::Context &context);
 
     void updateRepositoryBrowserAction();
-    bool isCommitEditorOpen() const;
     Core::IEditor *openSubmitEditor(const QString &fileName, const CommitData &cd);
     void cleanCommitMessageFile();
     void cleanRepository(const QString &directory);