Index: uspace/lib/libc/generic/io/stream.c
===================================================================
--- uspace/lib/libc/generic/io/stream.c	(revision 1c03c17200abbb4be0af6280a56da5df849938f2)
+++ uspace/lib/libc/generic/io/stream.c	(revision 80dabb8d5cd8827e3f43939b3ce35fcce1382a99)
@@ -68,4 +68,6 @@
 		}
 		return i;
+	} else {
+		return -1;
 	}
 }