Coverity PW.USELESS_TYPE_QUALIFIER_ON_RETURN_TYPE - CID 10885 - plugins/opengl/include/opengl/vector.h - type qualifier on return type is meaningless

This bug is exported from the Coverity Integration Manager on Canonical's servers. For information on how this is done please see this website: https://wiki.ubuntu.com/CanonicalProductStrategy/Coverity
CID: 10885
Checker: PW.USELESS_TYPE_QUALIFIER_ON_RETURN_TYPE
Category: No category available
CWE definition: No definition available
File: /tmp/buildd/compiz-0.9.7.0~bzr3025/plugins/opengl/include/opengl/vector.h
Function: No function name available
Code snippet:
 63 /**
 64 * Returns a readonly x, y, z or w value by using
 65 * x, y, z, w as array-access items
 66 */
CID 10885 - PW.USELESS_TYPE_QUALIFIER_ON_RETURN_TYPE
type qualifier on return type is meaningless
During compilation of file '/tmp/buildd/compiz-0.9.7.0~bzr3025/plugins/opengl/src/matrix.cpp'
 67 const float operator[] (VectorCoordsEnum coord) const;
 68
 69 /**
 70 * Adds all elements in a GLVector
 71 */
 72 GLVector& operator+= (const GLVector& rhs);