[Ada] arm-qnx-7.1: unwind goes wrong after regs restore

Bump the pc +3 total for Thumb mode, the same calculation that as is done for arm-linux. Tested on x86_64-pc-linux-gnu, committed on trunk gcc/ada/ * init.c (__gnat_adjust_context_for_raise) [QNX][__thumb2__]: Bump the pc an extra byte.diff --git a/gcc/ada/init.c b/gcc/ada/init.c

[Ada] arm-qnx-7.1: unwind goes wrong after regs restore

The usual increment of the pc to pc+2 for ARM is needed. Tested on x86_64-pc-linux-gnu, committed on trunk gcc/ada/ * init.c (QNX): __gnat_adjust_context_for_raise: New implementation for arm-qnx.diff --git a/gcc/ada/init.c b/gcc/ada/init.c --- a/gcc/ada/init.c +++ b/gcc/ada/init