Close file descriptor leak in example code.
Coverity CID 1295386.
diff --git a/examples/in-memory.c b/examples/in-memory.c
index 3f5a2c7..4da097a 100644
--- a/examples/in-memory.c
+++ b/examples/in-memory.c
@@ -72,6 +72,7 @@
     if (fread(*datap, 1, (size_t)st.st_size, fp) < (size_t)st.st_size) {
 	free(*datap);
 	fprintf(stderr, "can't read %s: %s\n", archive, strerror(errno));
+	fclose(fp);
 	return -1;
     }