alttab: Add memleaks patch

Signed-off-by: Nathan Owens <ndowens04@gmail.com>

srcpkgs/alttab/patches/0001-Fix-memleaks-in-error-case.patch

@@ -0,0 +1,41 @@
+From 980bdef0fde36772e283e36a7e12ce28ff1901aa Mon Sep 17 00:00:00 2001
+From: Michael Vetter <jubalh@iodoru.org>
+Date: Thu, 3 Oct 2019 17:25:19 +0200
+Subject: [PATCH] Fix memleaks in error case
+
+We should free img.data.
+---
+ src/pngd.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/pngd.c b/src/pngd.c
+index ef46621..fb3fd25 100644
+--- src/pngd.c
++++ src/pngd.c
+@@ -250,6 +250,7 @@ int pngReadToDrawable(char *pngpath, Drawable d, uint8_t bg_red,
+     fclose(infile);
+     if (!img.data || img.width == 0 || img.height == 0) {
+         fprintf(stderr, "error loading png data\n");
++        pngFree(&img);
+         return 0;
+     }
+     if (debug > 0)
+@@ -259,6 +260,7 @@ int pngReadToDrawable(char *pngpath, Drawable d, uint8_t bg_red,
+     pad = 32;
+     if (!xdata) {
+         fprintf(stderr, "xdata malloc error\n");
++        pngFree(&img);
+         return 0;
+     }
+     ximage =
+@@ -267,6 +269,7 @@ int pngReadToDrawable(char *pngpath, Drawable d, uint8_t bg_red,
+     if (!ximage) {
+         fprintf(stderr, "error creating ximage\n");
+         free(xdata);
++        pngFree(&img);
+         return 0;
+     }
+     ximage->byte_order = MSBFirst;
+-- 
+2.24.0
+

srcpkgs/alttab/patches/0002-Remove-check-around-free.patch

@@ -0,0 +1,27 @@
+From f7e8ff30190a3134863d7ff03becc2e397ec9db0 Mon Sep 17 00:00:00 2001
+From: Michael Vetter <jubalh@iodoru.org>
+Date: Thu, 3 Oct 2019 17:20:40 +0200
+Subject: [PATCH] Remove check around free()
+
+free(NULL) is noop. We don't need to check for this.
+---
+ src/randr.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/src/randr.c b/src/randr.c
+index e4ebe9d..0622c73 100644
+--- src/randr.c
++++ src/randr.c
+@@ -186,8 +186,7 @@ bool randrGetViewport(quad * res, bool * multihead)
+     if (no < 1) {
+         msg(0, "randr didn't detect any output\n");
+         *multihead = false;
+-        if (oq != NULL)
+-            free(oq);
++        free(oq);
+         return false;
+     }
+     if (no == 1) {
+-- 
+2.24.0
+

srcpkgs/alttab/template

@@ -1,7 +1,7 @@
 # Template file for 'alttab'
 pkgname=alttab
 version=1.4.0
-revision=1
+revision=2
 build_style=gnu-configure
 hostmakedepends="pkg-config"
 makedepends="libX11-devel libXft-devel libXmu-devel libXrandr-devel