Free libpgeasy result structure on database close; fixed memory leak.

Author: bmomjian

src/interfaces/libpgeasy/libpgeasy.c

@@ -62,6 +62,11 @@ connectdb(char *options)
 void
 disconnectdb()
 {
+	if (res != NULL &&
+		in_result_block == FALSE &&
+		was_get_unset_result == FALSE)
+		PQclear(res);
+
 	PQfinish(conn);
 }