Use const where const is enough
diff --git a/tinyxml2.cpp b/tinyxml2.cpp
index d26b483..2a58773 100755
--- a/tinyxml2.cpp
+++ b/tinyxml2.cpp
@@ -237,7 +237,7 @@
     _start = XMLUtil::SkipWhiteSpace( _start );

 

     if ( *_start ) {

-        char* p = _start;	// the read pointer

+        const char* p = _start;	// the read pointer

         char* q = _start;	// the write pointer

 

         while( *p ) {

@@ -267,7 +267,7 @@
         _flags ^= NEEDS_FLUSH;

 

         if ( _flags ) {

-            char* p = _start;	// the read pointer

+            const char* p = _start;	// the read pointer

             char* q = _start;	// the write pointer

 

             while( p < _end ) {