Fix unused parameters and variables

llvm-svn: 290459
diff --git a/libcxx/include/stdexcept b/libcxx/include/stdexcept
index b9dd285..d501d09 100644
--- a/libcxx/include/stdexcept
+++ b/libcxx/include/stdexcept
@@ -191,7 +191,8 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
     throw logic_error(__msg);
 #else
-	_VSTD::abort();
+    ((void)__msg);
+	  _VSTD::abort();
 #endif
 }
 
@@ -201,7 +202,8 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
     throw domain_error(__msg);
 #else
-	_VSTD::abort();
+    ((void)__msg);
+	  _VSTD::abort();
 #endif
 }
 
@@ -211,7 +213,8 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
     throw invalid_argument(__msg);
 #else
-	_VSTD::abort();
+    ((void)__msg);
+	  _VSTD::abort();
 #endif
 }
 
@@ -221,7 +224,8 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
     throw length_error(__msg);
 #else
-	_VSTD::abort();
+    ((void)__msg);
+	  _VSTD::abort();
 #endif
 }
 
@@ -231,7 +235,8 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
     throw out_of_range(__msg);
 #else
-	_VSTD::abort();
+    ((void)__msg);
+	  _VSTD::abort();
 #endif
 }
 
@@ -241,7 +246,8 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
     throw range_error(__msg);
 #else
-	_VSTD::abort();
+    ((void)__msg);
+	  _VSTD::abort();
 #endif
 }
 
@@ -251,7 +257,8 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
     throw overflow_error(__msg);
 #else
-	_VSTD::abort();
+    ((void)__msg);
+    _VSTD::abort();
 #endif
 }
 
@@ -261,7 +268,8 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
     throw underflow_error(__msg);
 #else
-	_VSTD::abort();
+    ((void)__msg);
+    _VSTD::abort();
 #endif
 }