Fix dereferencing of nullptr

Hlt/HltDAQ/src/component/HltSelReportsDecoder.cpp

@@ -195,7 +195,7 @@ namespace LHCb::Hlt::DAQ {
       while ( i < hitsSubBank99.seqEnd( 0 ) ) {
         int temp1 = hitsSubBank99.location()[i++];
         int temp2 = hitsSubBank99.location()[i++];
-        if ( !idmap_dummy )
+        if ( idmap_dummy )
           summary.addToInfo( idmap_dummy->find( temp1 )->second, temp2 );
         else
           summary.addToInfo( std::to_string( temp1 ), temp2 );