btrfs-progs: build: properly pass the LDFLAGS during tsan build

The variable LD_FLAGS does not exist and the flags are not used, we need
to use the newly added internal debugging linker flags.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/Makefile b/Makefile
index f196198..3d55203 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -168,7 +168,7 @@ endif
 
 ifneq (,$(findstring tsan,$(D)))
   DEBUG_CFLAGS_INTERNAL += -fsanitize=thread -fPIE
-  LD_FLAGS += -fsanitize=thread -ltsan -pie
+  DEBUG_LDFLAGS_INTERNAL += -fsanitize=thread -ltsan -pie
 endif
 
 ifneq (,$(findstring ubsan,$(D)))