Fix mis-merge of upstream fix.

We would accidentally make the string one byte too short.

Submitted by: Orit Moskovich (oritm mellanox.com)

Approved by:	re

sys/ofed/include/linux/sysfs.h

@@ -105,10 +105,6 @@ sysctl_handle_attr(SYSCTL_HANDLER_ARGS)
 			/* Trim trailing newline. */
 			buf[len] = '\0';
 		}
-
-		/* Trim trailing newline. */
-		len--;
-		((char*)buf)[len] = '\0';
 	}
 
 	/* Leave one trailing byte to append a newline. */