Don't mix iterator and const_iterator

This avoids unnecessary detaches of the Qt container data.
The mismatches where detected by defining QT_STRICT_ITERATORS;
however, this define violates the ODR (causing linker errors),
and therefore is not added permanently.

Change-Id: Idd336a9c8b394214a820437ef1b92d2101f6101c
GPush-Base: 62b0848b9c
Reviewed-by: Daniel Teske <daniel.teske@theqtcompany.com>

src/plugins/android/androidmanager.cpp

@@ -681,7 +681,8 @@ static bool mergeGradleProperties(const QString &path, GradleProperties properti
 
     }
 
-    for (GradleProperties::const_iterator it = properties.begin(); it != properties.end(); ++it)
+    for (GradleProperties::const_iterator it = properties.constBegin(); it != properties.constEnd();
+         ++it)
         file.write(it.key() + '=' + it.value() + '\n');
 
     file.close();