Fix potential NULL pointer dereference

With the async behavior of Scanner (and its interactions in MainWindow),
it isn't obvious that Session can't be non-NULL here. Hence it is
probably better to move the session use into the if-guard.

Resolves: #262

Signed-off-by: Alexander Scheel <alexander.m.scheel@gmail.com>

Author: cipherboy

src/ResultViewer.cpp

@@ -113,9 +113,10 @@ void ResultViewer::loadContent(Scanner* scanner)
 
         if (mInputBaseName.endsWith("-xccdf"))
             mInputBaseName.chop(QString("-xccdf").length());
-    }
-    if (session->isSelectedProfileTailoring()) {
-        tailoringFilePath = session->getTailoringFilePath();
+
+        if (session->isSelectedProfileTailoring()) {
+            tailoringFilePath = session->getTailoringFilePath();
+        }
     }
 
     mReport.clear();