CLEANUP: pattern: Ignore unknown samples in pat_match_ip().

Ignore samples that are neither SMP_T_IPV4 nor SMP_T_IPV6 instead of
matching with an uninitialized value in this case.

This situation should not occur in the current codebase but triggers
warnings in static code analysis tools.

Found in haproxy 1.5.

diff --git a/src/pattern.c b/src/pattern.c
index b4cb8e9ea60ba642c2a5ede069eec54ebb024898..9d07b89c5a6beec96afce8a4b4880cb63094ed96 100644 (file)
--- a/src/pattern.c
+++ b/src/pattern.c
@@ -1021,6 +1021,9 @@ struct pattern *pat_match_ip(struct sample *smp, struct pattern_expr *expr, int
                        }
                        else
                                continue;
+               } else {
+                 /* impossible */
+                 continue;
                }
 
                /* Check if the input sample match the current pattern. */