Fix comment

src/iddict.c

@@ -31,7 +31,7 @@ JL_DLLEXPORT jl_array_t *jl_idtable_rehash(jl_array_t *a, size_t newsz)
 }
 
 // returns where a key is stored, or -pos if the key was not present and would be inserted at pos
-// return is 1-indexed
+// result is 1-indexed
 static inline ssize_t jl_table_assign_bp(jl_array_t **pa, jl_value_t *key, jl_value_t *val)
 {
     // pa points to a **un**rooted address