Misc cleanups in the trap handling code.

lib/runtime/signalhandlers/SignalHandlers.cpp

@@ -406,13 +406,7 @@ HandleTrap(CONTEXT* context)
 {
     assert(sAlreadyHandlingTrap);
 
-    const uint8_t* pc = ContextToPC(context);
-    const CodeSegment* codeSegment = LookupCodeSegment(pc);
-    if (!codeSegment) {
-        return false;
-    }
-
-    RecordTrap(pc, codeSegment);
+    RecordTrap(ContextToPC(context));
 
     // Unwind calls longjmp, so it doesn't run the automatic
     // sAlreadhHanldingTrap cleanups, so reset it manually before doing

lib/runtime/signalhandlers/SignalHandlers.h

@@ -11,19 +11,12 @@
 extern "C" {
 #endif
 
-struct CodeSegment;
-
 // Record the Trap code and wasm bytecode offset in TLS somewhere
-void RecordTrap(const uint8_t* pc, const struct CodeSegment* codeSegment);
+void RecordTrap(const uint8_t* pc);
 
 // Initiate an unwind.
 void Unwind(void);
 
-// Return the CodeSegment containing the given pc, if any exist in the process.
-// This method does not take a lock.
-const struct CodeSegment*
-LookupCodeSegment(const void* pc);
-
 // Trap initialization state.
 struct TrapContext {
     bool triedToInstallSignalHandlers;