fixing typos

Change-Id: I215e1e0208a073db80ec6f87695d734cf40fabe3
Signed-off-by: Jim Thompson <jim@netgate.com>
diff --git a/src/vnet/mfib/ip4_mfib.c b/src/vnet/mfib/ip4_mfib.c
index d20d1f6..8760371 100644
--- a/src/vnet/mfib/ip4_mfib.c
+++ b/src/vnet/mfib/ip4_mfib.c
@@ -303,7 +303,7 @@
     if (NULL == result)
     {
         /*
-         * removing a non-existant entry. i'll allow it.
+         * removing a non-existent entry. i'll allow it.
          */
     }
     else