[libvirt] [PATCH 2/2] tests: Avoid "jump skips variable initialization" with GCC 9.

[Richard W.M. Jones]

GCC 9 gives pages of errors like:

qemumonitorjsontest.c: In function 'mymain':
qemumonitorjsontest.c:2904:9: error: jump skips variable initialization [-Werror=jump-misses-init]
 2904 |         goto cleanup;
      |         ^~~~
qemumonitorjsontest.c:3111:2: note: label 'cleanup' defined here
 3111 |  cleanup:
      |  ^~~~~~~
qemumonitorjsontest.c:2920:54: note: '({anonymous})' declared here
 2920 |     simpleFunc = (testQemuMonitorJSONSimpleFuncData) {.xmlopt = driver.xmlopt, \
      |                                                      ^
qemumonitorjsontest.c:3008:5: note: in expansion of macro 'DO_TEST_GEN'
 3008 |     DO_TEST_GEN(qemuMonitorJSONBlockdevMediumInsert);
      |     ^~~~~~~~~~~

By moving the cleanup section up near the top of the function we can
avoid this.  I think a better way might be to disable the warning.
---
 tests/qemumonitorjsontest.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/tests/qemumonitorjsontest.c b/tests/qemumonitorjsontest.c
index 1a8a31717f..299c5f0cbe 100644
--- a/tests/qemumonitorjsontest.c
+++ b/tests/qemumonitorjsontest.c
@@ -2900,8 +2900,12 @@ mymain(void)
 
     if (!(qapiData.schema = testQEMUSchemaLoad())) {
         VIR_TEST_VERBOSE("failed to load qapi schema\n");
-        ret = -1;
-        goto cleanup;
+    cleanup:
+        VIR_FREE(metaschemastr);
+        virJSONValueFree(metaschema);
+        virHashFree(qapiData.schema);
+        qemuTestDriverFree(&driver);
+        return -1;
     }
 
 #define DO_TEST(name) \
@@ -3098,7 +3102,6 @@ mymain(void)
     if (!(metaschema = testQEMUSchemaGetLatest()) ||
         !(metaschemastr = virJSONValueToString(metaschema, false))) {
         VIR_TEST_VERBOSE("failed to load latest qapi schema\n");
-        ret = -1;
         goto cleanup;
     }
 
@@ -3108,7 +3111,6 @@ mymain(void)
 
 #undef DO_TEST_QAPI_SCHEMA
 
- cleanup:
     VIR_FREE(metaschemastr);
     virJSONValueFree(metaschema);
     virHashFree(qapiData.schema);
-- 
2.20.1