Add missing include

ldionne · ldionne · commit f60f31f7a8f6 · 2024-02-05T12:00:40.000-05:00
diff --git a/libcxx/include/__numeric/saturation_arithmetic.h b/libcxx/include/__numeric/saturation_arithmetic.h
@@ -10,6 +10,7 @@
 #ifndef _LIBCPP___NUMERIC_SATURATION_ARITHMETIC_H
 #define _LIBCPP___NUMERIC_SATURATION_ARITHMETIC_H
 
+#include <__assert>
 #include <__concepts/arithmetic.h>
 #include <__config>
 #include <__utility/cmp.h>
