[cogl/cogl-1.8] Drive by leak fix when code spelunking

[Neil Roberts <nroberts src gnome org>]

commit e012d5f06f12ddeed4b4331e159013b6b1859382
Author: Ray Strode <rstrode redhat com>
Date:   Fri Mar 16 12:27:55 2012 -0400

    Drive by leak fix when code spelunking
    
    _cogl_shader_compile_real spews a warning when
    shader compilation fails if COGL_GL_DEBUG is
    defined.  This warning is never freed.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=672243
    
    Reviewed-by: Neil Roberts <neil linux intel com>
    
    (cherry picked from commit dc00c2724998c422dcd597b87f222553e67f3801)

 cogl/cogl-shader.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/cogl/cogl-shader.c b/cogl/cogl-shader.c
index cb70976..b6ed453 100644
--- a/cogl/cogl-shader.c
+++ b/cogl/cogl-shader.c
@@ -385,6 +385,7 @@ _cogl_shader_compile_real (CoglHandle handle,
           g_warning ("Failed to compile GLSL program:\nsrc:\n%s\nerror:\n%s\n",
                      shader->source,
                      log);
+          g_free (log);
         }
 #endif
     }