warning cleanup: empty do/while style.

This is the fifth round of an effort to enable GCC's -Wextra
option.

* signal.h (sig_save_enable, sig_save_disable): Fix the
compiler warning about do ; while (0) benefiting from
braces around the empty statement. I agree with this;
I was momentarily confused myself by that semicolon.

1 files changed, 2 insertions, 2 deletions

diff --git a/signal.h b/signal.h
index c3e5375f..3a83cbe0 100644
--- a/signal.h
+++ b/signal.h
@@ -40,7 +40,7 @@ extern small_sigset_t sig_blocked_cache;
       sig_check();                              \
     async_sig_enabled = 1;                      \
     {                                           \
-      do ; while (0)
+      do { } while (0)
 
 #define sig_restore_enable                      \
     }                                           \
@@ -52,7 +52,7 @@ extern small_sigset_t sig_blocked_cache;
     int sig_save = async_sig_enabled;           \
     async_sig_enabled = 0;                      \
     {                                           \
-      do ; while (0)
+      do { } while (0)
 
 #define sig_restore_disable                     \
     }                                           \