refs #5368 fix tokuvalgrind to count lines and compare them with 0 properly

git-svn-id: file:///svn/toku/tokudb@48685 c7de825b-a66e-492c-adef-691d508d4ae1

scripts/tokugrind

@@ -38,7 +38,7 @@ fi
 valgrind $args
 exitcode=$?
 if [ $exitcode = 0 ] ; then
-    lines=$(wc -l $logfile)
+    lines=$(wc -l <$logfile)
     if [ $lines -ne 0 ] ; then
 	exitcode=$errorexitcode
     fi