[dynarmic] restore proper backtraces for A64 (#3794)

trivial changes, fixes hard crashes

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3794
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

1 files changed, 5 insertions, 1 deletions

diff --git a/src/core/arm/nce/interpreter_visitor.cpp b/src/core/arm/nce/interpreter_visitor.cpp
index be6fee8613..077a696cc8 100644
--- a/src/core/arm/nce/interpreter_visitor.cpp
+++ b/src/core/arm/nce/interpreter_visitor.cpp
@@ -773,7 +773,11 @@ std::optional<u64> MatchAndExecuteOneInstruction(Core::Memory::Memory& memory, m
     bool was_executed = false;
 
     auto decoder = Dynarmic::A64::Decode<VisitorBase>(instruction);
-    was_executed = decoder.get().call(visitor, instruction);
+    if (decoder) {
+        was_executed = decoder->get().call(visitor, instruction);
+    } else {
+        was_executed = false;
+    }
     return was_executed ? std::optional<u64>(pc + 4) : std::nullopt;
 }