fix empty naming

Author: bassiounix

libc/include/stdlib.yaml

@@ -5,9 +5,9 @@ standards:
 merge_yaml_files:
   - stdlib-malloc.yaml
 macros:
-  - macro_name: LIBC_HAS_ANNEX_K
+  - macro_name: 'LIBC_HAS_ANNEX_K'
     macro_header: annex-k-macros.h
-  - macro_name: NULL
+  - macro_name: 'NULL'
     macro_header: null-macro.h
 types:
   - type_name: __atexithandler_t
@@ -191,7 +191,7 @@ functions:
     return_type: constraint_handler_t
     arguments:
       - type: constraint_handler_t
-    guard: LIBC_HAS_ANNEX_K
+    guard: 'LIBC_HAS_ANNEX_K'
   - name: abort_handler_s
     standards:
       - stdc
@@ -200,7 +200,7 @@ functions:
       - type: const char *__restrict
       - type: void *__restrict
       - type: errno_t
-    guard: LIBC_HAS_ANNEX_K
+    guard: 'LIBC_HAS_ANNEX_K'
   - name: ignore_handler_s
     standards:
       - stdc
@@ -209,7 +209,7 @@ functions:
       - type: const char *__restrict
       - type: void *__restrict
       - type: errno_t
-    guard: LIBC_HAS_ANNEX_K
+    guard: 'LIBC_HAS_ANNEX_K'
   - name: srand
     standards:
       - stdc