[evolution] Remove comments that have no point after pthreads dependency disappeared

[Fridrich Strba <strba src gnome org>]

commit 1869e4ebe8d2bfd09110e6a81e9a32f653266aff
Author: Fridrich Å trba <fridrich strba bluewin ch>
Date:   Fri Apr 16 00:59:15 2010 +0200

    Remove comments that have no point after pthreads dependency disappeared

 mail/em-composer-utils.c                      |    5 ++---
 mail/message-list.c                           |   11 +++++++----
 widgets/e-timezone-dialog/e-timezone-dialog.c |    7 ++++---
 3 files changed, 13 insertions(+), 10 deletions(-)
---
diff --git a/mail/em-composer-utils.c b/mail/em-composer-utils.c
index 3bd5021..7e8d2b1 100644
--- a/mail/em-composer-utils.c
+++ b/mail/em-composer-utils.c
@@ -60,10 +60,9 @@
 #include "em-event.h"
 
 #ifdef G_OS_WIN32
-/* Undef the similar macro from pthread.h, it doesn't check if
- * gmtime() returns NULL.
- */
+#ifdef gmtime_r
 #undef gmtime_r
+#endif
 
 /* The gmtime() in Microsoft's C library is MT-safe */
 #define gmtime_r(tp,tmp) (gmtime(tp)?(*(tmp)=*gmtime(tp),(tmp)):0)
diff --git a/mail/message-list.c b/mail/message-list.c
index 8662999..321edc3 100644
--- a/mail/message-list.c
+++ b/mail/message-list.c
@@ -75,12 +75,15 @@
 #endif
 
 #ifdef G_OS_WIN32
-/* Undefine the similar macro from <pthread.h>,it doesn't check if
- * localtime() returns NULL.
- */
+#ifdef gmtime_r
+#undef gmtime_r
+#endif
+#ifdef localtime_r
 #undef localtime_r
+#endif
 
-/* The localtime() in Microsoft's C library is MT-safe */
+/* The gmtime() and localtime() in Microsoft's C library are MT-safe */
+#define gmtime_r(tp,tmp) (gmtime(tp)?(*(tmp)=*gmtime(tp),(tmp)):0)
 #define localtime_r(tp,tmp) (localtime(tp)?(*(tmp)=*localtime(tp),(tmp)):0)
 #endif
 
diff --git a/widgets/e-timezone-dialog/e-timezone-dialog.c b/widgets/e-timezone-dialog/e-timezone-dialog.c
index 250cc1d..734301e 100644
--- a/widgets/e-timezone-dialog/e-timezone-dialog.c
+++ b/widgets/e-timezone-dialog/e-timezone-dialog.c
@@ -37,11 +37,12 @@
 #include "e-timezone-dialog.h"
 
 #ifdef G_OS_WIN32
-/* Undef the similar macros from pthread.h, they don't check if
- * gmtime() and localtime() return NULL.
- */
+#ifdef gmtime_r
 #undef gmtime_r
+#endif
+#ifdef localtime_r
 #undef localtime_r
+#endif
 
 /* The gmtime() and localtime() in Microsoft's C library are MT-safe */
 #define gmtime_r(tp,tmp) (gmtime(tp)?(*(tmp)=*gmtime(tp),(tmp)):0)