style: remove trailing whitespace (#345)

* style: restore correct 644 file permission

* style: remove trailing whitespace

tests/stresstests/files/org.sdbuscpp.stresstests.conf

@@ -12,7 +12,7 @@
     <allow send_destination="org.sdbuscpp.stresstests.service1"/>
     <allow send_interface="org.sdbuscpp.stresstests.service1"/>
   </policy>
-  
+
   <policy context="default">
     <allow own="org.sdbuscpp.stresstests.service2"/>
     <allow send_destination="org.sdbuscpp.stresstests.service2"/>

tests/stresstests/sdbus-c++-stress-tests.cpp

@@ -509,6 +509,6 @@ int main(int argc, char *argv[])
 
     exitLogger = true;
     loggerThread.join();
-    
+
     return 0;
 }