fix broken app_log() api. fix #2218
fix broken app_log() api. fix #2218

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