makefile: remove ivf{enc,dec} on make clean

Prior clean-up removed the object files, but not the binaries
themselves.

Change-Id: Ic2332188cea88094c14457ebb8b77680a60d581b

examples.mk

@@ -41,8 +41,8 @@ ifeq ($(CONFIG_MSVS),yes)
 CLEAN-OBJS += $(foreach p,$(VS_PLATFORMS),$(p)/Release/ivfenc.exe)
 CLEAN-OBJS += $(foreach p,$(VS_PLATFORMS),$(p)/Release/ivfdec.exe)
 else
-CLEAN-OBJS += ivfenc{.c.o,.c.d,.dox,.exe}
-CLEAN-OBJS += ivfdec{.c.o,.c.d,.dox,.exe}
+CLEAN-OBJS += ivfenc{.c.o,.c.d,.dox,.exe,}
+CLEAN-OBJS += ivfdec{.c.o,.c.d,.dox,.exe,}
 endif
 
 # XMA example disabled for now, not used in VP8