Fix an unused variable warning. NFC

llvm-svn: 346651
diff --git a/lldb/source/Plugins/Process/Utility/StopInfoMachException.cpp b/lldb/source/Plugins/Process/Utility/StopInfoMachException.cpp
index 3edd487..de0821eb 100644
--- a/lldb/source/Plugins/Process/Utility/StopInfoMachException.cpp
+++ b/lldb/source/Plugins/Process/Utility/StopInfoMachException.cpp
@@ -44,8 +44,10 @@
     const char *subcode_label = "subcode";
     const char *subcode_desc = NULL;
 
+#if defined(__APPLE__)
     char code_desc_buf[32];
     char subcode_desc_buf[32];
+#endif
 
     switch (m_value) {
     case 1: // EXC_BAD_ACCESS