Revert also an other part of "Extract getGLVersion() method to OpenGLHelper"

This partly reverts commit 23c876de.

Change-Id: I9ba7a2e8286b5fa6064c3b9e2d680fedf402f1a2

slideshow/source/engine/OGLTrans/win/OGLTrans_TransitionerImpl.cxx

@@ -56,8 +56,6 @@
 #include <vcl/syschild.hxx>
 #include <vcl/sysdata.hxx>
 
-#include <vcl/opengl/OpenGLHelper.hxx>
-
 #include <boost/noncopyable.hpp>
 
 #include <GL/gl.h>
@@ -316,8 +314,14 @@ bool OGLTransitionerImpl::initialize( const Reference< presentation::XSlideShowV
         instance = new OGLTransitionerImpl( NULL );
         if( instance->initWindowFromSlideShowView( xView ) ) {
 
-            cnGLVersion = OpenGLHelper::getGLVersion();
-            OSL_TRACE("GL version: %f", cnGLVersion );
+            const GLubyte* version = glGetString( GL_VERSION );
+            if( version && version[0] ) {
+                cnGLVersion = version[0] - '0';
+                if( version[1] == '.' && version[2] )
+                    cnGLVersion += (version[2] - '0')/10.0;
+            } else
+                cnGLVersion = 1.0;
+            OSL_TRACE("GL version: %s parsed: %f", version, cnGLVersion );
 
             const GLubyte* vendor = glGetString( GL_VENDOR );
             cbMesa = ( vendor && strstr( (const char *) vendor, "Mesa" ) );