patch 9.0.1941: Memory leak detected

Problem:  Memory leak detected (after 9.0.1928)
Solution: Free arg_objm in get_lambda_tv()

closes: #13181

Signed-off-by: Christian Brabandt <[email protected]>
Co-authored-by: Yegappan Lakshmanan <[email protected]>

Author: yegappan

src/userfunc.c

@@ -1721,7 +1721,10 @@ get_lambda_tv(
     eval_lavars_used = old_eval_lavars;
     vim_free(tofree2);
     if (types_optional)
+    {
 	ga_clear_strings(&argtypes);
+	ga_clear(&arg_objm);
+    }
 
     return OK;
 
@@ -1732,6 +1735,7 @@ get_lambda_tv(
     if (types_optional)
     {
 	ga_clear_strings(&argtypes);
+	ga_clear(&arg_objm);
 	if (fp != NULL)
 	    vim_free(fp->uf_arg_types);
     }

src/version.c

@@ -699,6 +699,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1941,
 /**/
     1940,
 /**/