On OS X libc headers don't define `environ', and since ec535cc2 removed
the redundant declaration this code no longer builds on OS X.
---
compat/unsetenv.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/compat/unsetenv.c b/compat/unsetenv.c
index 4ea1856..addf3dc 100644
--- a/compat/unsetenv.c
+++ b/compat/unsetenv.c
@@ -1,5 +1,10 @@
#include "../git-compat-util.h"
+#ifdef __APPLE__
+// On OS X libc headers don't define this symbol.
+extern char **environ;
+#endif
+
void gitunsetenv (const char *name)
{
int src, dst;
--
1.8.2.1.539.g4196a96
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