SDL: Don't compare pointer against '0', but NULL (cd0d5)

SDL Commits
1 
From cd0d5a5fc58a195f15c02a96f67fd55c4a60974b Mon Sep 17 00:00:00 2001
From: Sylvain <[EMAIL REDACTED]>
Date: Thu, 17 Nov 2022 11:23:15 +0100
Subject: [PATCH] Don't compare pointer against '0', but NULL

---
 src/stdlib/SDL_qsort.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/stdlib/SDL_qsort.c b/src/stdlib/SDL_qsort.c
index b0f92fde8693..d17b6a31c693 100644
--- a/src/stdlib/SDL_qsort.c
+++ b/src/stdlib/SDL_qsort.c
@@ -414,7 +414,7 @@ static void qsort_nonaligned(void *base, size_t nmemb, size_t size,
   char *first,*last;
   char *pivot=malloc(size);
   size_t trunc=TRUNC_nonaligned*size;
-  assert(pivot);
+  assert(pivot != NULL);
 
   first=(char*)base; last=first+(nmemb-1)*size;
 
@@ -445,7 +445,7 @@ static void qsort_aligned(void *base, size_t nmemb, size_t size,
   char *first,*last;
   char *pivot=malloc(size);
   size_t trunc=TRUNC_aligned*size;
-  assert(pivot);
+  assert(pivot != NULL);
 
   first=(char*)base; last=first+(nmemb-1)*size;
 
@@ -475,7 +475,7 @@ static void qsort_words(void *base, size_t nmemb,
   int stacktop=0;
   char *first,*last;
   char *pivot=malloc(WORD_BYTES);
-  assert(pivot);
+  assert(pivot != NULL);
 
   first=(char*)base; last=first+(nmemb-1)*WORD_BYTES;