compress_meth should be unsigned

ssl/ssl.h

diff --git a/ssl/ssl.h b/ssl/ssl.h
index 3b725ea..4a468de 100644
--- a/ssl/ssl.h
+++ b/ssl/ssl.h
@@ -486,7 +486,7 @@
 	long timeout;
 	long time;
 
-	int compress_meth;		/* Need to lookup the method */
+	unsigned int compress_meth;	/* Need to lookup the method */
 
 	const SSL_CIPHER *cipher;
 	unsigned long cipher_id;	/* when ASN.1 loaded, this