Fix a couple of silly compiler warnings

[originally from svn r1022]

ssh.h

@@ -51,6 +51,7 @@ void rsasanitise(struct RSAKey *key);
 int rsastr_len(struct RSAKey *key);
 void rsastr_fmt(char *str, struct RSAKey *key);
 void rsa_fingerprint(char *str, int len, struct RSAKey *key);
+int rsa_verify(struct RSAKey *key);
 void freersakey(struct RSAKey *key);
 
 typedef unsigned int word32;

sshrsa.c

@@ -180,6 +180,8 @@ int rsa_verify(struct RSAKey *key) {
     sfree(ed);
     if (cmp != 0)
 	return 0;
+
+    return 1;
 }
 
 void freersakey(struct RSAKey *key) {