Add CPP_OBJS-yes to CPP_OBJS, same as the other *_OBJS variables.

Originally committed as revision 8616 to svn://svn.ffmpeg.org/ffmpeg/trunk

common.mak

@@ -8,6 +8,7 @@ SRC_DIR = "$(VPATH)"
 CFLAGS   += $(CFLAGS-yes)
 OBJS     += $(OBJS-yes)
 ASM_OBJS += $(ASM_OBJS-yes)
+CPP_OBJS += $(CPP_OBJS-yes)
 
 CFLAGS += -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE \
           -D_ISOC9X_SOURCE -I$(BUILD_ROOT) -I$(SRC_PATH) \