A x86_64 architecture would use RIP rather than EIP as program counte…

…r in sqWin32VMProfile (by mimetism with linux branch).

platforms/win32/vm/sqWin32VMProfile.c

@@ -242,7 +242,13 @@ profileStateMachine(void *ignored)
 			pctype pc;
 			VMContext.ContextFlags = CONTEXT_CONTROL | THREAD_GET_CONTEXT;
 			GetThreadContext(VMThread, &VMContext);
+# if defined(_M_I386) || defined(_X86_) || defined(i386) || defined(__i386__)
 			pc = VMContext.Eip;
+#elif defined(x86_64) || defined(__x86_64) || defined(__x86_64__) || defined(__amd64) || defined(__amd64__) || defined(x64) || defined(_M_X64)
+			pc = VMContext.Rip;
+#else
+#error "unknown architecture, cannot pick program counter"
+#endif
 			pc_buffer[pc_buffer_index] = pc;
 			if (++pc_buffer_index >= pc_buffer_size) {
 				pc_buffer_index = 0;