Fixed cast in platform-macos.cc

TBR=whesse@chromium.org

Review URL: http://codereview.chromium.org/171114

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2813 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/platform-macos.cc

@@ -214,7 +214,10 @@ void OS::LogSharedLibraryAddresses() {
 #if V8_HOST_ARCH_X64
     uint64_t size;
     char* code_ptr = getsectdatafromheader_64(
-        (mach_header_64*)header, SEG_TEXT, SECT_TEXT, &size);
+        reinterpret_cast<const mach_header_64*>(header),
+        SEG_TEXT,
+        SECT_TEXT,
+        &size);
 #else
     unsigned int size;
     char* code_ptr = getsectdatafromheader(header, SEG_TEXT, SECT_TEXT, &size);