include <sys/types.h> explicitly if __unix__, to make sure macros visible

the _BIG_ENDIAN macro on NetBSD 9 and Solaris 9 are already visible here.
but it's because <sys/types.h> is included indirectly via <stdlib.h>
or <memory.h>.  that's fragile against changes in those headers.
pointed out by obache-san

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/sha1.c b/lib/sha1.c
index a116893..d594882 100644
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -10,6 +10,9 @@
 #include <memory.h>
 #include <stdio.h>
 #include <stdlib.h>
+#ifdef __unix__
+#include <sys/types.h> /* make sure macros like _BIG_ENDIAN visible */
+#endif
 #endif
 
 #ifdef SHA1DC_CUSTOM_INCLUDE_SHA1_C