bluedroid: compile error hammerhead-userdebug_clang

- This was a clang complaint, not a gcc complaint
- memset event to be portable to all compile environments
- error as follows:

external/bluetooth/bluedroid/osi/./src/reactor.c:90:34:
    error: missing field data initializer [-Werror,-Wmissing-field-initializers]
  struct epoll_event event = { 0 };
                                 ^
external/bluetooth/bluedroid/osi/./src/reactor.c:151:34:
    error: missing field data initializer [-Werror,-Wmissing-field-initializers]
  struct epoll_event event = { 0 };
                                 ^
external/bluetooth/bluedroid/osi/./src/reactor.c:174:34:
    error: missing field data initializer [-Werror,-Wmissing-field-initializers]
  struct epoll_event event = { 0 };
                                 ^
3 errors generated.
make: *** [out/target/product/hammerhead/obj/STATIC_LIBRARIES/libosi_intermediates/./src/reactor.o] Error 1

Change-Id: I14b884cf1665c68aff1e5afd3df65ac10af474d2
1 file changed
tree: 8ec00c970da675710ecd3f15e5590f67ca607f3c
  1. gki/
  2. system/
  3. Android.mk
  4. CleanSpec.mk
  5. MODULE_LICENSE_APACHE2
  6. NOTICE