win32: code shrink

Turn off the 'if-conversion' optimisation for err_win_to_posix().
My tests actually have this being slightly faster than with the
optimisation enabled, though within the variation of the measurement.

Saves 288 bytes.

1 files changed, 2 insertions, 0 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index e3424ff07..40714296f 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -46,6 +46,7 @@ unsigned int _CRT_fmode = _O_BINARY;
 
 smallint bb_got_signal;
 
+#pragma GCC optimize ("no-if-conversion")
 int err_win_to_posix(void)
 {
         int error = ENOSYS;
@@ -160,6 +161,7 @@ int err_win_to_posix(void)
         }
         return error;
 }
+#pragma GCC reset_options
 
 #undef strerror
 char *mingw_strerror(int errnum)