r.in.pdal: info.cpp also needs PDALCPPFLAGS (#1768)

raster/r.in.pdal/Makefile

@@ -12,6 +12,8 @@ include $(MODULE_TOPDIR)/include/Make/Module.make
 
 $(OBJDIR)/main.o : EXTRA_CFLAGS += $(PDALCPPFLAGS)
 
+$(OBJDIR)/info.o : EXTRA_CFLAGS += $(PDALCPPFLAGS)
+
 $(OBJDIR)/grasslidarfilter.o : EXTRA_CFLAGS += $(PDALCPPFLAGS)
 
 LINK = $(CXX)