Fix some duplicate inline warnings.

src/mem/alloc.h

@@ -234,7 +234,7 @@ namespace snmalloc
     FastFreeLists() : small_fast_free_lists() {}
   };
 
-  ALWAYSINLINE inline void* no_replacement(void*)
+  SNMALLOC_FAST_PATH void* no_replacement(void*)
   {
     return nullptr;
   }

src/mem/threadalloc.h

@@ -326,7 +326,7 @@ namespace snmalloc
    * so.  If we have not allocated a per-thread allocator yet, then this
    * function will allocate one.
    */
-  ALWAYSINLINE inline void* lazy_replacement(void* existing)
+  ALWAYSINLINE void* lazy_replacement(void* existing)
   {
     if (existing != &GlobalPlaceHolder)
     {