Mesa (master): gallivm: silence a couple compiler warnings

[Brian Paul]

Module: Mesa
Branch: master
Commit: 04e35cc4aac019fbf6ac5ea8f6d772bb6cacea8d
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=04e35cc4aac019fbf6ac5ea8f6d772bb6cacea8d

Author: Brian Paul <brianp at vmware.com>
Date:   Fri Dec 19 09:36:51 2014 -0700

gallivm: silence a couple compiler warnings

Silence warnings about possibly uninitialized variables when making a
release build.

Reviewed-by: José Fonseca <jfonseca at vmware.com>

---

 src/gallium/auxiliary/gallivm/lp_bld_sample.c   |    3 +++
 src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c |    2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample.c b/src/gallium/auxiliary/gallivm/lp_bld_sample.c
index 8cee994..093c8fc 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_sample.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_sample.c
@@ -411,6 +411,9 @@ lp_build_rho(struct lp_build_sample_context *bld,
          if (dims > 2) {
             ddx_ddy[1] = lp_build_abs(coord_bld, ddx_ddy[1]);
          }
+         else {
+            ddx_ddy[1] = NULL; /* silence compiler warning */
+         }
 
          if (dims < 2) {
             rho_xvec = lp_build_swizzle_aos(coord_bld, ddx_ddy[0], swizzle0);
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index 3dfff05..3b2097f 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -952,7 +952,7 @@ build_gather(struct lp_build_context *bld,
    LLVMBuilderRef builder = bld->gallivm->builder;
    LLVMValueRef res = bld->undef;
    unsigned i;
-   LLVMValueRef temp_ptr;
+   LLVMValueRef temp_ptr = NULL;
 
    if (overflow_mask) {
       temp_ptr = lp_build_alloca(