[PATCH] newlib: libc: Fix memory leak in computematchjumps()

[Kuan-Wei Chiu]

In cases where malloc fails for the 'g->matchjump' allocation, the code
path does not handle the failure gracefully, potentially leading to a
memory leak. This fix ensures proper cleanup by freeing the allocated
memory for 'pmatches' before returning.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
---
 newlib/libc/posix/regcomp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/newlib/libc/posix/regcomp.c b/newlib/libc/posix/regcomp.c
index 002f978cd..e71bc005c 100644
--- a/newlib/libc/posix/regcomp.c
+++ b/newlib/libc/posix/regcomp.c
@@ -2001,8 +2001,10 @@ struct re_guts *g;
 	}
 
 	g->matchjump = (int*) malloc(g->mlen * sizeof(unsigned int));
-	if (g->matchjump == NULL)	/* Not a fatal error */
-		return;
+	if (g->matchjump == NULL) { /* Not a fatal error */
+        free(pmatches);
+        return;
+    }
 
 	/* Set maximum possible jump for each character in the pattern */
 	for (mindex = 0; mindex < g->mlen; mindex++)
-- 
2.25.1