Fix up QProcess::waitForFinished()

waitForFinish returns false if the process is no longer running at
the time of the call. Handle that throughout the codebase.

Change-Id: Ia7194095454e82efbd4eb88f2d55926bdd09e094
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/android/androidrunner.h

@@ -90,6 +90,7 @@ private:
     bool adbShellAmNeedsQuotes();
 
 private:
+    bool runAdb(const QStringList &args, QString *errorMessage = nullptr, int timeoutS = 10);
     QProcess m_adbLogcatProcess;
     QProcess m_psProc;
     QTimer m_checkPIDTimer;