Fix a couple of other latent woopsies

The format string one is cool because it implies the Windows code was
also always wrong but the Windows headers aren't annotated for Clang so
I guess that means it doesn't warn. At least for the nonstandard Windows
wide character versions of things. Cool!

1 files changed, 1 insertions, 0 deletions

diff --git a/src/os.h b/src/os.h
index d231e67..0b4d5e1 100644
--- a/src/os.h
+++ b/src/os.h
@@ -42,6 +42,7 @@
 #else
 #include <dlfcn.h>
 #include <limits.h>
+#include <stdio.h>
 #include <string.h>
 #include <strings.h>
 #include <sys/mman.h>