sysctl: tiny code shrink

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/procps/sysctl.c b/procps/sysctl.c
index c9063bf..7a5bf14 100644
--- a/procps/sysctl.c
+++ b/procps/sysctl.c
@@ -56,8 +56,7 @@
 			*cptr = '\0';
 			//bb_error_msg("trying:'%s'", name);
 			if (access(name, F_OK) == 0) {
-				if (cptr != end) /* prevent trailing '/' */
-					*cptr = '/';
+				*cptr = '/';
 				//bb_error_msg("replaced:'%s'", name);
 				last_good = cptr;
 				goto again;