Fixed buffer overflow when increasing the size of a BitmapText (issue 486)

thanks  to Daniel Brunton for the patch
http://code.google.com/p/jmonkeyengine/issues/detail?id=486&colspec=ID%20Type%20Status%20Component%20Priority%20Product%20Milestone%20Owner%20Summary&start=100

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9278 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/util/BufferUtils.java

@@ -1062,7 +1062,7 @@ public final class BufferUtils {
             int position = (buffer != null ? buffer.position() : 0);
             FloatBuffer newVerts = createFloatBuffer(position + required);
             if (buffer != null) {
-                buffer.rewind();
+                buffer.flip();
                 newVerts.put(buffer);
                 newVerts.position(position);
             }
@@ -1076,7 +1076,7 @@ public final class BufferUtils {
             int position = (buffer != null ? buffer.position() : 0);
             ShortBuffer newVerts = createShortBuffer(position + required);
             if (buffer != null) {
-                buffer.rewind();
+                buffer.flip();
                 newVerts.put(buffer);
                 newVerts.position(position);
             }
@@ -1090,7 +1090,7 @@ public final class BufferUtils {
             int position = (buffer != null ? buffer.position() : 0);
             ByteBuffer newVerts = createByteBuffer(position + required);
             if (buffer != null) {
-                buffer.rewind();
+                buffer.flip();
                 newVerts.put(buffer);
                 newVerts.position(position);
             }