compiler.h: fix a typo and add some more function attribute macros

This fixes the ifndef guard on NONNULL and __CONCAT3 and adds
definitions for:
- __CONCAT() for a##b with the intermediate tokenization step
- ALLOCFUNC for __malloc__
- DEPRECATED for __deprecated__
- PURE for __pure__
- RETURNS_NONNULL for __nonnull__

Signed-off-by: Peter Jones <pjones@redhat.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/shim.h b/shim.h
index 44c01555..90d9e89c 100644
--- a/shim.h
+++ b/shim.h
@@ -33,8 +33,6 @@
 #include <stddef.h>
 #include <stdint.h>
 
-#define nonnull(...) __attribute__((__nonnull__(__VA_ARGS__)))
-
 #ifdef __x86_64__
 #ifndef DEFAULT_LOADER
 #define DEFAULT_LOADER L"\\grubx64.efi"