environment.c: fix constness for odb_pack_keep()

diff --git a/git-compat-util.h b/git-compat-util.h
index 585ef8a79bd9fa66a34a840eae30658894a213f1..adbfb5e42fe68b0bdd72774f416791933cbdb372 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -533,7 +533,7 @@ extern FILE *xfdopen(int fd, const char *mode);
 extern int xmkstemp(char *template);
 extern int xmkstemp_mode(char *template, int mode);
 extern int odb_mkstemp(char *template, size_t limit, const char *pattern);
-extern int odb_pack_keep(char *name, size_t namesz, unsigned char *sha1);
+extern int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1);
 
 static inline size_t xsize_t(off_t len)
 {