fix macro test

Author: tgross35

crates/libm-macros/tests/basic.rs

@@ -146,6 +146,7 @@ fn test_fn_extra_expansion() {
     let mut vf32 = Vec::new();
     let mut vf64 = Vec::new();
     let mut vf128 = Vec::new();
+    let mut vbuiltins = Vec::new();
 
     // Test with no extra, no skip, and no attributes
     libm_macros::for_each_function! {
@@ -155,6 +156,7 @@ fn test_fn_extra_expansion() {
             ALL_F32 => vf32,
             ALL_F64 => vf64,
             ALL_F128 => vf128,
+            ALL_BUILTINS => vbuiltins,
         }
     }
 
@@ -170,8 +172,11 @@ fn test_fn_extra_expansion() {
     for name in vf32 {
         assert!(name.ends_with("f"), "{name}");
     }
-    let _ = vf64;
     for name in vf128 {
         assert!(name.ends_with("f128"), "{name}");
     }
+
+    // Nothing to assert here
+    let _ = vf64;
+    let _ = vbuiltins;
 }