Mesa (master): configure: Fix another bashism.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: dbe0dd11b9ec1e497277f15ce70506eff17ecdec
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=dbe0dd11b9ec1e497277f15ce70506eff17ecdec

Author: Eric Anholt <eric at anholt.net>
Date:   Wed Jan  4 10:52:34 2017 -0800

configure: Fix another bashism.

Reviewed-by: Matt Turner <mattst88 at gmail.com>

---

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 799f5eb..d1ffb57 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2382,7 +2382,7 @@ dnl
 dnl Gallium helper functions
 dnl
 gallium_require_llvm() {
-    if test "x$enable_gallium_llvm" == "xyes"; then
+    if test "x$enable_gallium_llvm" = "xyes"; then
         llvm_check_version_for $LLVM_REQUIRED_GALLIUM "gallium"
     else
         AC_MSG_ERROR([--enable-gallium-llvm is required when building $1])