Fix different look when running the application second time

The problem was introduced in Qt 5.7.

Task-number: QTBUG-60297
Change-Id: I46265b24e104e08fe5b8026e5441514a438582c9
Reviewed-by: Christian Stromme <christian.stromme@qt.io>

src/android/java/src/org/qtproject/qt5/android/bindings/QtLoader.java

@@ -608,9 +608,11 @@ public abstract class QtLoader {
                 if (!(new File(stylePath)).exists() && !extractOption.equals("none")) {
                     loaderParams.putString(EXTRACT_STYLE_KEY, stylePath);
                     loaderParams.putBoolean(EXTRACT_STYLE_MINIMAL_KEY, extractOption.equals("minimal"));
+                }
+
                 if (extractOption.equals("full"))
                     ENVIRONMENT_VARIABLES += "\tQT_USE_ANDROID_NATIVE_STYLE=1";
-                }
+
                 ENVIRONMENT_VARIABLES += "\tMINISTRO_ANDROID_STYLE_PATH=" + stylePath
                         + "\tQT_ANDROID_THEMES_ROOT_PATH=" + themePath;