ProjectExplorer: Use member initialization for XcodeBuildParser test

Not necessary, but fixes a coverity warning.

Change-Id: I36a01519fec863d122f4ccddab76d8d8626f759e
Reviewed-by: Vikas Pachdha <vikas.pachdha@qt.io>

src/plugins/projectexplorer/xcodebuildparser.h

@@ -73,7 +73,7 @@ public:
     explicit XcodebuildParserTester(XcodebuildParser *parser, QObject *parent = nullptr);
 
     XcodebuildParser *parser;
-    XcodebuildParser::XcodebuildStatus expectedFinalState;
+    XcodebuildParser::XcodebuildStatus expectedFinalState = XcodebuildParser::OutsideXcodebuild;
 
 public slots:
     void onAboutToDeleteParser();