Revert "DO NOT MERGE: Remove unused variables"

This reverts commit cb72f3643f475b70089e79108e16621787262e2b.

Change-Id: I10196a15fe92e281d4922f384f373a964ff703ec
diff --git a/icmp.c b/icmp.c
index 75a4a4d..af96b83 100644
--- a/icmp.c
+++ b/icmp.c
@@ -139,7 +139,7 @@
   }
 
   // We don't understand this ICMP type. Return parameter problem so the caller will bail out.
-  logmsg_dbg(ANDROID_LOG_DEBUG, "icmp6_to_icmp_type: unhandled ICMP type/code %d/%d", type, code);
+  logmsg_dbg(ANDROID_LOG_DEBUG, "icmp6_to_icmp_type: unhandled ICMP type %d", type);
   return ICMP_PARAMETERPROB;
 }