Fix cppcheck-opensource#378 (GUI doesn't start application if path contains spaces)

In Windows we must surround paths including spaces with quotation marks. This patch fixes application path when it is read from Browse-dialog.

Author: kimmov

gui/applicationdialog.cpp

@@ -82,7 +82,6 @@ ApplicationDialog::~ApplicationDialog()
     //dtor
 }
 
-
 void ApplicationDialog::Browse()
 {
     QFileDialog dialog(this);
@@ -93,7 +92,18 @@ void ApplicationDialog::Browse()
         QStringList list = dialog.selectedFiles();
         if (list.size() > 0)
         {
-            mPath->setText(QDir::toNativeSeparators(list[0]));
+            QString path(QDir::toNativeSeparators(list[0]));
+
+            // In Windows we must surround paths including spaces with quotation marks.
+#ifdef Q_WS_WIN
+            if (path.indexOf(" ") > -1)
+            {
+                path.insert(0, "\"");
+                path.append("\"");
+            }
+#endif // Q_WS_WIN
+
+            mPath->setText(path);
         }
     }
 }