Change GET/GBIT32 macros to explicitly cast final result to u32int.
Otherwise, the type of the expression will be int, and if written to
a uvlong (or just a ulong on most 64-bit systems), it will be
sign-extended.
This was going on in drawfcall with Mouse.msec, which is declared
as a ulong.
This fix assumes that the protocols only send unsigned numbers,
which is true.
diff --git a/include/fcall.h b/include/fcall.h
index aebb451..a5dae33 100644
--- a/include/fcall.h
+++ b/include/fcall.h
@@ -50,7 +50,7 @@
#define GBIT8(p) ((p)[0])
#define GBIT16(p) ((p)[0]|((p)[1]<<8))
-#define GBIT32(p) ((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24))
+#define GBIT32(p) ((u32int)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)))
#define GBIT64(p) ((u32int)((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) |\
((vlong)((p)[4]|((p)[5]<<8)|((p)[6]<<16)|((p)[7]<<24)) << 32))
