[qtcontacts-sqlite] Workaround issue with QWaitCondition. Contributes…

… to MER#1853

QWaitCondition::wait() will immediately return false on 64bit
architectures if the timeout value is greater than MAX_INT.
https://bugreports.qt.io/browse/QTBUG-54625

src/engine/contactsengine.cpp

@@ -611,7 +611,7 @@ class JobThread : public QThread
     bool waitForFinished(QContactAbstractRequest *request, const int msecs)
     {
         long timeout = msecs <= 0
-                ? LONG_MAX
+                ? INT32_MAX
                 : msecs;
 
         Job *finishedJob = 0;