Fixed method override in generic extensions

IDEHelper/Compiler/BfModule.cpp

@@ -24355,7 +24355,7 @@ void BfModule::DoMethodDeclaration(BfMethodDeclaration* methodDeclaration, bool
 				auto checkMethodInstance = typeInstance->mMethodInstanceGroups[checkMethod->mIdx].mDefault;				
 				if (checkMethodInstance == NULL)
 				{
-					if ((methodDef->mIsNew) && (methodDef->mDeclaringType->IsExtension()) && (!checkMethod->mDeclaringType->IsExtension()))
+					if ((methodDef->mDeclaringType->IsExtension()) && (!checkMethod->mDeclaringType->IsExtension()))
 						checkMethodInstance = GetRawMethodInstanceAtIdx(typeInstance, checkMethod->mIdx);
 					if (checkMethodInstance == NULL)
 						continue;

IDEHelper/Tests/src/Extensions.bf

@@ -267,6 +267,18 @@ namespace Tests
 		    }
 		}
 
+		struct TestExtern<T>
+		{
+			public extern void MethodA();
+		}
+
+		extension TestExtern<T> where T : Char8
+		{
+			public override void MethodA()
+			{
+			}
+		}
+
 		[Test]
 		public static void TestBasics()
 		{