[PATCH 3/4] quiet uninitialized variable warnings

[Eric Wong <user@example.com>]

From: Eric Wong <e@80x24.org>

-Wmaybe-uninitialized (tested gcc 8.3.0) needlessly warns about
this, but it's a good simplification nevertheless.
---
 Mwrap.xs | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/Mwrap.xs b/Mwrap.xs
index 8ce7b46..4d346ab 100644
--- a/Mwrap.xs
+++ b/Mwrap.xs
@@ -469,16 +469,14 @@ internal_memalign(void **pp, size_t alignment, size_t size, uintptr_t caller)
 static void *
 memalign_result(int err, void *p)
 {
-	if (caa_unlikely(err)) {
+	if (caa_unlikely(err))
 		errno = err;
-		return 0;
-	}
 	return p;
 }
 
 void *memalign(size_t alignment, size_t size)
 {
-	void *p;
+	void *p = NULL;
 	int err = internal_memalign(&p, alignment, size, RETURN_ADDRESS(0));
 	return memalign_result(err, p);
 }
@@ -493,7 +491,7 @@ void cfree(void *) __attribute__((alias("free")));
 
 void *valloc(size_t size)
 {
-	void *p;
+	void *p = NULL;
 	int err = internal_memalign(&p, page_size, size, RETURN_ADDRESS(0));
 	return memalign_result(err, p);
 }
@@ -511,7 +509,7 @@ void *valloc(size_t size)
 void *pvalloc(size_t size)
 {
 	size_t alignment = page_size;
-	void *p;
+	void *p = NULL;
 	int err;
 
 	if (add_overflow_p(size, alignment)) {