Fix linux build after r143679.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@143703 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Host/common/Host.cpp b/source/Host/common/Host.cpp
index 451a575..9993a84 100644
--- a/source/Host/common/Host.cpp
+++ b/source/Host/common/Host.cpp
@@ -440,9 +440,10 @@
     case SIGABRT:   return "SIGABRT";   // 6    abort()
 #if  (defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE))
     case SIGPOLL:   return "SIGPOLL";   // 7    pollable event ([XSR] generated, not supported)
-#else    // !_POSIX_C_SOURCE
+#endif
+#if  !defined(_POSIX_C_SOURCE)
     case SIGEMT:    return "SIGEMT";    // 7    EMT instruction
-#endif    // !_POSIX_C_SOURCE
+#endif
     case SIGFPE:    return "SIGFPE";    // 8    floating point exception
     case SIGKILL:   return "SIGKILL";   // 9    kill (cannot be caught or ignored)
     case SIGBUS:    return "SIGBUS";    // 10    bus error