rdrview: fix build for libxml2 2.12

srcpkgs/rdrview/patches/fix-libxml2-2.12.patch

@@ -0,0 +1,26 @@
+From b5fdd379577e13d26784ffdeca3ecb02ff1d336e Mon Sep 17 00:00:00 2001
+From: oreo639 <oreo6391@gmail.com>
+Date: Sun, 18 Feb 2024 13:49:49 -0800
+Subject: [PATCH] Add missing include with libxml2 2.12+
+
+libxml2 2.12 removed extra includes, which causes stdlib.h to not get implicitly
+included anymore.
+
+The missing include results in a warning on gcc13 and below with the resulting
+binary truncating the pointer to an integer, gcc14+ makes this a hard error.
+---
+ src/rdrview.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/rdrview.h b/src/rdrview.h
+index 9365e7a..2eda156 100644
+--- a/src/rdrview.h
++++ b/src/rdrview.h
+@@ -26,6 +26,7 @@
+ #define RDRVIEW_H
+ 
+ #include <assert.h>
++#include <stdlib.h>
+ #include <stdbool.h>
+ #include <sys/types.h>
+ #include <regex.h>