Frameworks/base: Turn on -Wall -Werror in cmds

Fix small warnings, turn on -Wall -Werror.

Change-Id: Iab1f01a7c7ebd6ba832b75067c5e395f380a1b8b
diff --git a/cmds/bootanimation/bootanimation_main.cpp b/cmds/bootanimation/bootanimation_main.cpp
index 417e138..6550d22 100644
--- a/cmds/bootanimation/bootanimation_main.cpp
+++ b/cmds/bootanimation/bootanimation_main.cpp
@@ -36,7 +36,7 @@
 
 // ---------------------------------------------------------------------------
 
-int main(int argc, char** argv)
+int main()
 {
 #if defined(HAVE_PTHREADS)
     setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_DISPLAY);