[PATCH teavpn2 1/3] allocator: Fix `@errno` value when overflow

[Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org>]

The calloc() function from libc sets the @errno variable to ENOMEM
when overflow, not to EOVERFLOW. Change it to ENOMEM to follow libc
error code.

Fixes: 44f2ca85b3b923b9405b9da89a1e76039b7bafa1 ("allocator: implement custom allocator to guarantee 64-byte alignment")
Cc: Ammar Faizi <ammarfaizi2@gmail.com>
Cc: Louvian Lyndal <louvianlyndal@gmail.com>
Cc: Michael Arminto <kohaku.mski@gmail.com>
Signed-off-by: Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org>
---
 src/teavpn2/allocator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/teavpn2/allocator.c b/src/teavpn2/allocator.c
index 5918009..8aeb2d8 100644
--- a/src/teavpn2/allocator.c
+++ b/src/teavpn2/allocator.c
@@ -32,7 +32,7 @@ noinline void *al64_calloc(size_t nmemb, size_t size)
 	size_t real_size = 0;
 
 	if (unlikely(__builtin_mul_overflow(nmemb, size, &real_size))) {
-		errno = EOVERFLOW;
+		errno = ENOMEM;
 		return NULL;
 	}
 
-- 
Alviro Iskandar Setiawan