Merge pull request libgit2#5997 from boretrk/sha1_endian

sha1dc: remove conditional for <sys/types.h>

Author: ethomson

src/hash/sha1/sha1dc/sha1.c

@@ -10,10 +10,8 @@
 #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
 #include SHA1DC_CUSTOM_INCLUDE_SHA1_C