Fixed compiler warning when using BITS macro.

diff --git a/inflate_p.h b/inflate_p.h
index fdec88e5927d88db133c4f916d243e4bea20fde1..7225e96de7a7b13c2e0fc836285174cb4cbfd696 100644 (file)
--- a/inflate_p.h
+++ b/inflate_p.h
@@ -75,7 +75,7 @@
 
 /* Return the low n bits of the bit accumulator (n < 16) */
 #define BITS(n) \
-    (hold & ((1U << (n)) - 1))
+    (hold & ((1U << (unsigned)(n)) - 1))
 
 /* Remove n bits from the bit accumulator */
 #define DROPBITS(n) \