Fix build on AIX platform

See: https://github.com/nodejs/node-v8/issues/23
Bug: 
Change-Id: Id8e1e828f6f9b1639917319b88c037942f8e73e8
Reviewed-on: https://chromium-review.googlesource.com/743941Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michaël Zasso <mic.besace@gmail.com>
Cr-Commit-Position: refs/heads/master@{#49064}

src/base/platform/platform-posix.cc

@@ -252,7 +252,7 @@ bool OS::CommitRegion(void* address, size_t size, bool is_executable) {
     return false;
   }
 #else
-  if (mprotect(base, size, prot) == -1) return false;
+  if (mprotect(address, size, prot) == -1) return false;
 #endif  // !V8_OS_AIX
   return true;
 }
@@ -270,7 +270,7 @@ bool OS::UncommitRegion(void* address, size_t size) {
   return mmap(address, size, PROT_NONE, map_flags, kMmapFd, kMmapFdOffset) !=
          MAP_FAILED;
 #else   // V8_OS_AIX
-  return mprotect(base, size, PROT_NONE) != -1;
+  return mprotect(address, size, PROT_NONE) != -1;
 #endif  // V8_OS_AIX
 }
 

src/utils.h

@@ -5,9 +5,6 @@
 #ifndef V8_UTILS_H_
 #define V8_UTILS_H_
 
-#if defined(V8_OS_AIX)
-#include <fenv.h>  // NOLINT(build/c++11)
-#endif
 #include <limits.h>
 #include <stdlib.h>
 #include <string.h>
@@ -25,6 +22,10 @@
 #include "src/vector.h"
 #include "src/zone/zone.h"
 
+#if defined(V8_OS_AIX)
+#include <fenv.h>  // NOLINT(build/c++11)
+#endif
+
 namespace v8 {
 namespace internal {