Fix warnings for 32-bit in lttng-ust-cyg-profile

Fix warnings for 32-bit in lttng-ust-cyg-profile

In file included from ../include/lttng/ust-tracepoint-event.h:357,
                 from ../include/lttng/tracepoint-event.h:62,
                 from lttng-ust-cyg-profile.h:63,
                 from lttng-ust-cyg-profile.c:27:
././lttng-ust-cyg-profile.h: In function ‘__event_prepare_filter_stack__lttng_ust_cyg_profile___func_entry’:
././lttng-ust-cyg-profile.h:35: warning: cast from pointer to integer of different size
././lttng-ust-cyg-profile.h:35: warning: cast from pointer to integer of different size
././lttng-ust-cyg-profile.h:35: warning: cast from pointer to integer of different size
././lttng-ust-cyg-profile.h:35: warning: cast from pointer to integer of different size
././lttng-ust-cyg-profile.h: In function ‘__event_prepare_filter_stack__lttng_ust_cyg_profile___func_exit’:
././lttng-ust-cyg-profile.h:46: warning: cast from pointer to integer of different size
././lttng-ust-cyg-profile.h:46: warning: cast from pointer to integer of different size
././lttng-ust-cyg-profile.h:46: warning: cast from pointer to integer of different size
././lttng-ust-cyg-profile.h:46: warning: cast from pointer to integer of different size
  CCLD   liblttng-ust-cyg-profile.la
  CC     lttng-ust-cyg-profile-fast.lo
In file included from ../include/lttng/ust-tracepoint-event.h:357,
                 from ../include/lttng/tracepoint-event.h:62,
                 from lttng-ust-cyg-profile-fast.h:59,
                 from lttng-ust-cyg-profile-fast.c:27:
././lttng-ust-cyg-profile-fast.h: In function ‘__event_prepare_filter_stack__lttng_ust_cyg_profile_fast___func_entry’:
././lttng-ust-cyg-profile-fast.h:35: warning: cast from pointer to integer of different size
././lttng-ust-cyg-profile-fast.h:35: warning: cast from pointer to integer of different size

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>