[PATCH 1/2] configure: Don't use empty expression in clang check.

[Jacek Caban]

From: Jacek Caban

Avoids m4_default default action.
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 074086c586b..f57ca541d80 100644
--- a/configure.ac
+++ b/configure.ac
@@ -900,7 +900,7 @@ do
         WINE_TRY_PE_CFLAGS([$llvm_extra_cflags $llvm_cflags --no-default-config],
                            [llvm_extra_cflags="$llvm_extra_cflags --no-default-config"
                             llvm_extra_ldflags="--no-default-config"],
-                           [WINE_TRY_PE_CFLAGS([$llvm_extra_cflags $llvm_cflags],[],
+                           [WINE_TRY_PE_CFLAGS([$llvm_extra_cflags $llvm_cflags],[:],
                                                [llvm_extra_cflags=""])])
         if test -n "$llvm_extra_cflags"
         then