Fix error meessages in DexFile::ChangePermissions() and mem_map.cc.

Change-Id: I9be999b61b0fca1ab9cad7521346681d2370f1c4
diff --git a/src/mem_map.cc b/src/mem_map.cc
index 8201fa8..d3ebd4a 100644
--- a/src/mem_map.cc
+++ b/src/mem_map.cc
@@ -233,7 +233,8 @@
     return true;
   }
 
-  PLOG(ERROR) << "mprotect(" << base_begin_ << ", " << base_size_ << ", " << prot << ") failed";
+  PLOG(ERROR) << "mprotect(" << reinterpret_cast<void*>(base_begin_) << ", " << base_size_ << ", "
+              << prot << ") failed";
   return false;
 }