Fix setting instantiated receiver type in instantiateSignature

Signed-off-by: Anna Rift <[email protected]>

frontend/lib/resolution/resolution-queries.cpp

@@ -2284,7 +2284,7 @@ ApplicabilityResult instantiateSignature(Context* context,
         //
         // Also recompute receiver scopes based on the instantiated type so
         // that we correctly resolve the types of field identifiers.
-        visitor.setCompositeType(formalType.type()->toCompositeType());
+        visitor.setCompositeType(formalType.type()->getCompositeType());
         visitor.receiverScopesComputed = false;
       }
     }