check.d/logs: Only worry if Exim's paniclog is nonempty.

The log rotation script leaves the file in place.

diff --git a/check.d/logs b/check.d/logs
index d18e6b6..9da514c 100755 (executable)
--- a/check.d/logs
+++ b/check.d/logs
@@ -5,6 +5,6 @@
 set -e
 
 ## Check Exim's paniclog to see whether it was upset about anything.
-if [ -f /var/log/exim4/paniclog ]; then
+if [ -s /var/log/exim4/paniclog ]; then
   echo "W: Exim paniclog exists.  Be afraid."
 fi