From da9a0786f7d95a6e961b00db5ef8728ae739d2a6 Mon Sep 17 00:00:00 2001
From: twinaphex <libretro@gmail.com>
Date: Fri, 3 Jul 2020 19:21:45 +0200
Subject: [PATCH] (zlib) Backport
 https://github.com/jtkukunas/zlib/commit/60a5ecc62b18d1e2391993b1fcfc10e100720642#diff-e17b59778d9aff01f3b9b23f56d76d48

---
 deps/libz/inffast.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/deps/libz/inffast.c b/deps/libz/inffast.c
index 39107688fb..74c893eac8 100644
--- a/deps/libz/inffast.c
+++ b/deps/libz/inffast.c
@@ -47,7 +47,7 @@ output space.
 */
 void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start)
 {
-   code here;                  /* retrieved table entry */
+   code const *here;           /* retrieved table entry */
    unsigned op;                /* code bits, operation, extra bits, or */
    /*  window position, window bytes to copy */
    unsigned len;               /* match length, unused bytes */
@@ -83,17 +83,17 @@ void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start)
          hold += (unsigned long)(*in++) << bits;
          bits += 8;
       }
-      here = lcode[hold & lmask];
+      here = lcode + (hold & lmask);
 dolen:
-      op = (unsigned)(here.bits);
+      op = (unsigned)(here->bits);
       hold >>= op;
       bits -= op;
-      op = (unsigned)(here.op);
+      op = (unsigned)(here->op);
       if (op == 0)                          /* literal */
-         *out++ = (unsigned char)(here.val);
+         *out++ = (unsigned char)(here->val);
       else if (op & 16)                     /* length base */
       {
-         len = (unsigned)(here.val);
+         len = (unsigned)(here->val);
          op &= 15;                           /* number of extra bits */
          if (op)
          {
@@ -115,16 +115,16 @@ dolen:
             bits += 8;
          }
 
-         here = dcode[hold & dmask];
+         here = dcode + (hold & dmask);
 
 dodist:
-         op = (unsigned)(here.bits);
+         op = (unsigned)(here->bits);
          hold >>= op;
          bits -= op;
-         op = (unsigned)(here.op);
+         op = (unsigned)(here->op);
          if (op & 16)                       /* distance base */
          {
-            dist = (unsigned)(here.val);
+            dist = (unsigned)(here->val);
             op &= 15;                       /* number of extra bits */
             if (bits < op)
             {
@@ -236,7 +236,7 @@ dodist:
          }
          else if ((op & 64) == 0)            /* 2nd level distance code */
          {
-            here = dcode[here.val + (hold & ((1U << op) - 1))];
+            here = dcode + here->val + (hold & ((1U << op) - 1));
             goto dodist;
          }
          else
@@ -248,7 +248,7 @@ dodist:
       }
       else if ((op & 64) == 0)                /* 2nd level length code */
       {
-         here = lcode[here.val + (hold & ((1U << op) - 1))];
+         here = lcode + here->val + (hold & ((1U << op) - 1));
          goto dolen;
       }
       else if (op & 32)                       /* end-of-block */