[COMCTL32][USER32] Edit: Don't unlock if unlocked on EM_SETHANDLE (#7886)

JIRA issue: CORE-18944
EDIT_EM_GetHandle unlocks the handle,
so the next EM_SETHANDLE handler
shouldn't unlock the unlocked text.
Don't unlock the handle when es->text
was NULL on EM_SETHANDLE
message handling.

dll/win32/comctl32/edit.c

@@ -2715,6 +2715,9 @@ static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc)
     if (!hloc)
         return;
 
+#ifdef __REACTOS__
+    if (es->text)
+#endif
     EDIT_UnlockBuffer(es, TRUE);
 
     es->hloc32W = hloc;

win32ss/user/user32/controls/edit.c

@@ -2898,6 +2898,9 @@ static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc)
 		return;
 	}
 
+#ifdef __REACTOS__
+	if (es->text)
+#endif
 	EDIT_UnlockBuffer(es, TRUE);
 
 	if(es->is_unicode)