Address Sanitizer fixes in functional_tests

frame #6: 0x0000000100009910 fdb_functional_test`basic_test() +
22080 at fdb_functional_test.cc:260
frame #7: 0x0000000100061214 fdb_functional_test`main + 20 at
fdb_functional_test.cc:5174

and

frame #5: 0x00000001003d872e
libclang_rt.asan_osx_dynamic.dylib`__asan_report_load4 + 46
frame #6: 0x0000000100021066
iterator_functional_test`iterator_complete_test(insert_opt=0,
        delete_opt=0) + 29654 at iterator_functional_test.cc:1206
frame #7: 0x0000000100060e00 iterator_functional_test`main +
80 at iterator_functional_test.cc:4124

Change-Id: I704b05cdea57ee1e425e7129891abe2828141eb0
Reviewed-on: http://review.couchbase.org/65663
Reviewed-by: abhinav dangeti <[email protected]>
Tested-by: buildbot <[email protected]>

Author: hisundar

tests/functional/fdb_functional_test.cc

@@ -257,7 +257,7 @@ void basic_test()
                                   (void *) "basic_test");
     TEST_CHK(status == FDB_RESULT_SUCCESS);
 
-    status = fdb_set(db_rdonly, doc[i]);
+    status = fdb_set(db_rdonly, doc[0]);
     TEST_CHK(status == FDB_RESULT_RONLY_VIOLATION);
     TEST_CHK(!strcmp(fdb_error_msg(status), "database is read-only"));
 

tests/functional/iterator_functional_test.cc

@@ -805,7 +805,7 @@ void iterator_complete_test(int insert_opt, int delete_opt)
 
     int n = 30;
     int i, r, c;
-    int *doc_status = alca(int, n); // 0:HB+trie, 1:WAL, 2:deleted
+    int *doc_status = alca(int, n+1); // 0:HB+trie, 1:WAL, 2:deleted
     char cmd[256];
     char key[256], value[256];
     char keystr[] = "key%06d";