Update OGLExport.cpp
Update OGLExport.cpp

Fix GL.getShaderPrecisionFormat bug
haxenme/nme,madrazo/nme,haxenme/nme,madrazo/nme,thomasuster/NME,thomasuster/NME,madrazo/nme,haxenme/nme,haxenme/nme,haxenme/nme,thomasuster/NME,madrazo/nme,madrazo/nme,thomasuster/NME,madrazo/nme,thomasuster/NME,thomasuster/NME