Git: Prevent * in branch/remote names

Change-Id: I8934352359710e1890a04310c22086f80dd4a7cd
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: André Hartmann <aha_1980@gmx.de>

src/plugins/git/gitplugin.cpp

@@ -190,6 +190,7 @@ QString GitPlugin::invalidBranchAndRemoteNamePattern()
         "|//"     // no double slash
         "|^[/-]"  // no leading slash or dash
         "|\""     // no quotes
+        "|\\*"    // no asterisk
     );
 }