win32ole.c: use rb_sym2str

* ext/win32ole/win32ole.c: use rb_sym2str when the result strings
  will not be modified.

* ext/win32ole/win32ole_event.c: ditto.

* ext/win32ole/win32ole_record.c: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50311 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/win32ole/win32ole.c

@@ -2513,7 +2513,7 @@ hash2named_arg(VALUE key, VALUE val, VALUE pop)
         rb_raise(rb_eTypeError, "wrong argument type (expected String or Symbol)");
     }
     if (RB_TYPE_P(key, T_SYMBOL)) {
-	key = rb_sym_to_s(key);
+	key = rb_sym2str(key);
     }
 
     /* pNamedArgs[0] is <method name>, so "index + 1" */
@@ -2580,7 +2580,7 @@ ole_invoke(int argc, VALUE *argv, VALUE self, USHORT wFlags, BOOL is_bracket)
 	rb_raise(rb_eTypeError, "method is wrong type (expected String or Symbol)");
     }
     if (RB_TYPE_P(cmd, T_SYMBOL)) {
-	cmd = rb_sym_to_s(cmd);
+	cmd = rb_sym2str(cmd);
     }
     pole = oledata_get_struct(self);
     if(!pole->pDispatch) {
@@ -3577,7 +3577,7 @@ fole_respond_to(VALUE self, VALUE method)
         rb_raise(rb_eTypeError, "wrong argument type (expected String or Symbol)");
     }
     if (RB_TYPE_P(method, T_SYMBOL)) {
-        method = rb_sym_to_s(method);
+        method = rb_sym2str(method);
     }
     pole = oledata_get_struct(self);
     wcmdname = ole_vstr2wc(method);

ext/win32ole/win32ole_event.c

@@ -1041,7 +1041,7 @@ ev_on_event(int argc, VALUE *argv, VALUE self, VALUE is_ary_arg)
             rb_raise(rb_eTypeError, "wrong argument type (expected String or Symbol)");
         }
         if (RB_TYPE_P(event, T_SYMBOL)) {
-            event = rb_sym_to_s(event);
+            event = rb_sym2str(event);
         }
     }
     data = rb_ary_new3(4, rb_block_proc(), event, args, is_ary_arg);
@@ -1131,7 +1131,7 @@ fev_off_event(int argc, VALUE *argv, VALUE self)
             rb_raise(rb_eTypeError, "wrong argument type (expected String or Symbol)");
         }
         if (RB_TYPE_P(event, T_SYMBOL)) {
-            event = rb_sym_to_s(event);
+            event = rb_sym2str(event);
         }
     }
     events = rb_ivar_get(self, id_events);

ext/win32ole/win32ole_record.c

@@ -288,7 +288,7 @@ folerecord_initialize(VALUE self, VALUE typename, VALUE oleobj) {
         rb_raise(rb_eArgError, "1st argument should be String or Symbol");
     }
     if (RB_TYPE_P(typename, T_SYMBOL)) {
-        typename = rb_sym_to_s(typename);
+        typename = rb_sym2str(typename);
     }
 
     hr = S_OK;
@@ -452,7 +452,7 @@ folerecord_method_missing(int argc, VALUE *argv, VALUE self)
 {
     VALUE name;
     rb_check_arity(argc, 1, 2);
-    name = rb_sym_to_s(argv[0]);
+    name = rb_sym2str(argv[0]);
 
 #if SIZEOF_SIZE_T > SIZEOF_LONG
     {
@@ -508,7 +508,7 @@ folerecord_ole_instance_variable_get(VALUE self, VALUE name)
     }
     sname = name;
     if (RB_TYPE_P(name, T_SYMBOL)) {
-        sname = rb_sym_to_s(name);
+        sname = rb_sym2str(name);
     }
     return olerecord_ivar_get(self, sname);
 }
@@ -547,7 +547,7 @@ folerecord_ole_instance_variable_set(VALUE self, VALUE name, VALUE val)
     }
     sname = name;
     if (RB_TYPE_P(name, T_SYMBOL)) {
-        sname = rb_sym_to_s(name);
+        sname = rb_sym2str(name);
     }
     return olerecord_ivar_set(self, sname, val);
 }