Fix two issues in Issue #80

Corrected the comment for the Get Channel Info command to
reflect the logic in the code. For issue two, corrected the
condition for returning the unspecifed error.

Fixes openbmc/phosphor-host-ipmid#80
diff --git a/apphandler.C b/apphandler.C
index d014f5b..b8cc0aa 100644
--- a/apphandler.C
+++ b/apphandler.C
@@ -445,7 +445,9 @@
 
     printf("IPMI APP GET CHANNEL INFO\n");
 
-    // I"m only supporting channel 1.  0xE is the 'default channel'
+    // The supported channels numbers are 1 and 8.
+    // Channel Number E is used as way to identify the current channel
+    // that the command is being is received from.
     if (*p == 0xe || *p == 1 || *p == 8) {
 
         *data_len = sizeof(resp);