checksrc: detect more kinds of NULL comparisons we avoidbagder/NULL-checks

Co-authored-by: Jay Satiro
Closes #8180

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/checksrc.pl b/lib/checksrc.pl
index 8f98a99ab..eea1126d1 100755
--- a/lib/checksrc.pl
+++ b/lib/checksrc.pl
@@ -502,7 +502,7 @@ sub scanfile {
         }
         # check for '== NULL' in if/while conditions but not if the thing on
         # the left of it is a function call
-        if($nostr =~ /^(.*)(if|while)(\(.*[^)]) == NULL/) {
+        if($nostr =~ /^(.*)(if|while)(\(.*?)([!=]= NULL|NULL [!=]=)/) {
             checkwarn("EQUALSNULL", $line,
                       length($1) + length($2) + length($3),
                       $file, $l, "we prefer !variable instead of \"== NULL\" comparisons");