aset fsize only when file exists

.githooks/post-merge

@@ -19,8 +19,10 @@ rm -f $OPKG_CMDS_TMP
 
 for fn in $(git diff-tree -r HEAD@{1} HEAD --name-only); do
     if grep -E -q "(DC.*json|dc.*hex|dc.*bin|tariff.*json)" <<< $fn; then
-        fsize=$(ls -l $fn | awk '{ print $5 }')
-        # add size so external programs can check
+        fsize=0
+        if [[ -f "$fn" ]]; then
+            fsize=$(ls -l "$fn" | awk '{ print $5 }')
+        fi
         echo "$fn $fsize" >> $GIT_PULL_TMP
     fi
     if grep -E -q ".*opkg_commands" <<< $fn; then