[lldb] Correctly display the number of types found

Correctly display the number of types found for `target modules lookup
--type` and add a test.

Fixes #53219

Author: JDevlieghere

lldb/source/Commands/CommandObjectTarget.cpp

@@ -1605,7 +1605,6 @@ static size_t LookupTypeInModule(Target *target,
   TypeList type_list;
   if (module && name_cstr && name_cstr[0]) {
     const uint32_t max_num_matches = UINT32_MAX;
-    size_t num_matches = 0;
     bool name_is_fully_qualified = false;
 
     ConstString name(name_cstr);
@@ -1616,8 +1615,10 @@ static size_t LookupTypeInModule(Target *target,
     if (type_list.Empty())
       return 0;
 
+    const uint64_t num_matches = type_list.GetSize();
+
     strm.Indent();
-    strm.Printf("%" PRIu64 " match%s found in ", (uint64_t)num_matches,
+    strm.Printf("%" PRIu64 " match%s found in ", num_matches,
                 num_matches > 1 ? "es" : "");
     DumpFullpath(strm, &module->GetFileSpec(), 0);
     strm.PutCString(":\n");

lldb/test/API/commands/target/basic/TestTargetCommand.py

@@ -468,3 +468,11 @@ def test_target_modules_search_paths_query(self):
         # Invalid arguments.
         self.expect("target modules search-paths query faz baz", error=True,
                     substrs=["query requires one argument"])
+
+    @no_debug_info_test
+    def test_target_modules_type(self):
+        self.buildB()
+        self.runCmd("file " + self.getBuildArtifact("b.out"),
+                    CURRENT_EXECUTABLE_SET)
+        self.expect("target modules lookup --type int",
+                    substrs=["1 match found", 'name = "int"'])