coverity#704204 Logically dead code

Change-Id: I0a8dbbb3dbe7408e6f4d92c0bbebdaaa7d882f01
Reviewed-on: https://gerrit.libreoffice.org/2271Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>
Tested-by: Norbert Thiebaud <nthiebaud@gmail.com>

basic/source/runtime/methods.cxx

@@ -925,7 +925,7 @@ RTLFUNC(InStr)
         bool bCompatibility = ( pInst && pInst->IsCompatibility() );
         if( bCompatibility )
         {
-            SbiRuntime* pRT = pInst ? pInst->pRun : NULL;
+            SbiRuntime* pRT = pInst->pRun;
             bTextMode = pRT ? pRT->GetImageFlag( SBIMG_COMPARETEXT ) : sal_False;
         }
         else