Integration tests: Remove SIGCHLD handler from test childs

alib2integrationtest/test-src/testing/TimeoutAqlTest.cpp

@@ -103,6 +103,10 @@ void _TimeoutAqlTest ( const std::chrono::microseconds & timeout, const ext::vec
 		FAIL ( "Fork error" );
 	} else if ( x == 0 ) {
 		/* child, run the test here */
+
+		act . sa_handler = SIG_DFL;
+		sigaction ( SIGCHLD, &act, NULL );
+
 		close ( g_Wakeup [ PIPE_RD ] );
 		close ( g_Wakeup [ PIPE_WR ] );
 		close ( pipefd [ PIPE_RD ] );