ircd:Ⓜ️:state: Fix db::not_found propagating from nothrow'ing get().

ircd/m/state.cc

@@ -10,7 +10,6 @@
 
 #include <ircd/m/m.h>
 
-
 /// Convenience to make a key and then get a value
 void
 ircd::m::state::get(const string_view &root,
@@ -64,6 +63,7 @@ ircd::m::state::get(std::nothrow_t,
                     const string_view &root,
                     const json::array &key,
                     const val_closure &closure)
+try
 {
 	bool ret{false};
 	char nextbuf[ID_MAX_SZ];
@@ -91,6 +91,10 @@ ircd::m::state::get(std::nothrow_t,
 
 	return ret;
 }
+catch(const db::not_found &e)
+{
+	return false;
+}
 
 size_t
 ircd::m::state::accumulate(const string_view &root,