[PATCH v2 3/9] trace: fix leak with regexp

[David Marchand <david.marchand@redhat.com>]

The precompiled buffer initialised in regcomp must be freed before
leaving rte_trace_regexp.

Fixes: 84c4fae4628f ("trace: implement operation APIs")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
Changes since v1:
- split patch in two, keeping only the backportable fix as patch 3,

---
 lib/eal/common/eal_common_trace.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/eal/common/eal_common_trace.c b/lib/eal/common/eal_common_trace.c
index 1b86f5d2d2..1db11e3e14 100644
--- a/lib/eal/common/eal_common_trace.c
+++ b/lib/eal/common/eal_common_trace.c
@@ -218,8 +218,10 @@ rte_trace_regexp(const char *regex, bool enable)
 				rc = rte_trace_point_disable(tp->handle);
 			found = 1;
 		}
-		if (rc < 0)
-			return rc;
+		if (rc < 0) {
+			found = 0;
+			break;
+		}
 	}
 	regfree(&r);
 
-- 
2.37.3