Fix code comment error for function rt_memset().

src/kservice.c

@@ -146,10 +146,10 @@ RT_WEAK void *rt_memset(void *s, int c, rt_ubase_t count)
 
     if (!TOO_SMALL(count) && !UNALIGNED(s))
     {
-        /* If we get this far, we know that n is large and m is word-aligned. */
+        /* If we get this far, we know that count is large and s is word-aligned. */
         aligned_addr = (unsigned long *)s;
 
-        /* Store D into each char sized location in BUFFER so that
+        /* Store d into each char sized location in buffer so that
          * we can set large blocks quickly.
          */
         if (LBLOCKSIZE == 4)