lexer C++: fix #1825
lexer C++: fix #1825

Alexey-T/CudaText,vhanla/CudaText,vhanla/CudaText,vhanla/CudaText,vhanla/CudaText,vhanla/CudaText,vhanla/CudaText,vhanla/CudaText,vhanla/CudaText,Alexey-T/CudaText,vhanla/CudaText,vhanla/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText,Alexey-T/CudaText