Use a more specific type, mach_exception_code_t, when possible

tools/catch_exception_tool.cc

Index: tools/catch_exception_tool.cc
diff --git a/tools/catch_exception_tool.cc b/tools/catch_exception_tool.cc
index 69447f758c0b69e6f359ab660f3ecaa367ea8dea..9673dc6918bf78768d88bb26f2c7cfccbbef356c 100644
--- a/tools/catch_exception_tool.cc
+++ b/tools/catch_exception_tool.cc
@@ -117,7 +117,7 @@ class ExceptionServer : public UniversalMachExcServer {
     }
 
     if (exception == EXC_CRASH) {
-      mach_exception_data_type_t original_code_0;
+      mach_exception_code_t original_code_0;
       int signal;
       exception_type_t original_exception =
           ExcCrashRecoverOriginalException(code[0], &original_code_0, &signal);