align with new @hide syntax

std/hashmap/hashmap.hon

@@ -132,7 +132,8 @@ put proc(
     }
 }
 
-hide normalize proc(hash usize) usize {
+@hide
+normalize proc(hash usize) usize {
     # mapping both 0 and 1 to 1 is safe because equality resolves
     # collisions (since hash and key must both be equal).
     if (hash == 0) return 1
@@ -141,7 +142,8 @@ hide normalize proc(hash usize) usize {
 
 #! FNV-1a hash implementation.
 #! note: vulnerable to collision attacks.
-hide str_hash proc(key []u8) usize {
+@hide
+str_hash proc(key []u8) usize {
     hash u32 := 2166136261 # offset basis
     prime u32 := 16777619
 
@@ -153,4 +155,5 @@ hide str_hash proc(key []u8) usize {
     return usize(hash)
 }
 
-hide str_eql proc(a, b []u8) bool { return mem.eql(a, b) }
+@hide
+str_eql proc(a, b []u8) bool { return mem.eql(a, b) }