Mesa (master): glsl: use ptrdiff_t cast to silence g++ sign warning

[Brian Paul]

Module: Mesa
Branch: master
Commit: 2826212dc79b90fcb008b72e5c1fdc34e8a1ac71
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2826212dc79b90fcb008b72e5c1fdc34e8a1ac71

Author: Brian Paul <brianp at vmware.com>
Date:   Sat Sep 20 08:32:39 2014 -0600

glsl: use ptrdiff_t cast to silence g++ sign warning

Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

---

 src/glsl/link_uniforms.cpp |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/glsl/link_uniforms.cpp b/src/glsl/link_uniforms.cpp
index 258d279..a6683a0 100644
--- a/src/glsl/link_uniforms.cpp
+++ b/src/glsl/link_uniforms.cpp
@@ -749,7 +749,7 @@ link_update_uniform_buffer_variables(struct gl_shader *shader)
                if (end == NULL)
                   continue;
 
-               if (l != (end - begin))
+               if ((ptrdiff_t) l != (end - begin))
                   continue;
 
                if (strncmp(var->name, begin, l) == 0) {