Bug 1299330 - Unbreak build on BSDs after bug 1287967. r=luke

MozReview-Commit-ID: KfZItwYpnzc

--HG--
extra : transplant_source : K%FB%A4%CBA%3D%CC%FE%83J%F2%F2%CFU%96%D8%FE%20%F9%EE

js/src/vm/ArrayBufferObject.cpp

@@ -551,14 +551,14 @@ class js::WasmArrayRawBuffer
 # ifdef XP_WIN
         if (!VirtualAlloc(dataPointer(), newMapped, MEM_RESERVE, PAGE_NOACCESS))
             return;
-# elif defined(XP_DARWIN)
-        // No mechanism for remapping on MaxOS. Luckily shouldn't need it here
-        // as most MacOS configs are 64 bit
-        return;
-#else // Unix
+# elif defined(XP_LINUX)
         // Note this will not move memory (no MREMAP_MAYMOVE specified)
         if (MAP_FAILED == mremap(dataPointer(), mappedSize_, newMapped, 0))
             return;
+# else
+        // No mechanism for remapping on MaxOS. Luckily shouldn't need it here
+        // as most MacOS configs are 64 bit
+        return;
 # endif  // !XP_WIN
 
         mappedSize_ = newMapped;