From 65d56e55216beed99f4bb81eddaffa8bafbdb33e Mon Sep 17 00:00:00 2001
From: Pierre Krieger <pierre.krieger1708@gmail.com>
Date: Wed, 22 Jul 2015 08:39:31 +0200
Subject: [PATCH] Fix calling XFree before reading from memory

---
 src/api/glx/mod.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/api/glx/mod.rs b/src/api/glx/mod.rs
index 65819f8a..f640bee2 100644
--- a/src/api/glx/mod.rs
+++ b/src/api/glx/mod.rs
@@ -340,13 +340,14 @@ fn create_context(glx: &ffi::glx::Glx, extra_functions: &ffi::glx_extra::Glx, ex
 unsafe fn enumerate_configs(glx: &ffi::glx::Glx, xlib: &ffi::Xlib, display: *mut ffi::Display)
                             -> Result<Vec<(ffi::glx::types::GLXFBConfig, PixelFormat)>, CreationError>
 {
-    let configs = {
+    let configs: Vec<ffi::glx::types::GLXFBConfig> = {
         let mut num_configs = 0;
         let vals = glx.GetFBConfigs(display as *mut _, 0, &mut num_configs);      // TODO: screen number
         assert!(!vals.is_null());
         let configs = slice::from_raw_parts(vals, num_configs as usize);
+        let ret = configs.to_vec();
         (xlib.XFree)(vals as *mut _);
-        configs.to_vec()
+        ret
     };
 
     let get_attrib = |attrib: libc::c_int, fb_config: ffi::glx::types::GLXFBConfig| -> i32 {