fix Warning

qt6-after/qt6-migrated-legatus/Lts/Viewer/SituationMap/Symbology/sidc_builder_base.cpp

@@ -159,7 +159,7 @@ QString SidcBuilderBase::concreteSidcToBaseSymbolCode(const QString &sidcCodec)
     case SymbologyType::APP6D    : // it's same as MIL2525D
     case SymbologyType::MIL2525D :
     {
-      if (rawSidc.count() != 20)
+      if (rawSidc.size() != 20)
         return QString();
 
       QString baseSymbolCode(