error: Put error definitions back in alphabetical order

Add suitable comments to help keerp them in order.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>

qerror.c

@@ -38,6 +38,10 @@ static const QType qerror_type = {
  * for example:
  *
  * "running out of foo: %(foo)%%"
+ *
+ * Please keep the entries in alphabetical order.
+ * Use "sed -n '/^static.*qerror_table\[\]/,/^};/s/QERR_/&/gp' qerror.c | sort -c"
+ * to check.
  */
 static const QErrorStringTable qerror_table[] = {
     {
@@ -64,10 +68,6 @@ static const QErrorStringTable qerror_table[] = {
         .error_fmt = QERR_DEVICE_INIT_FAILED,
         .desc      = "Device '%(device)' could not be initialized",
     },
-    {
-        .error_fmt = QERR_DEVICE_NOT_ENCRYPTED,
-        .desc      = "Device '%(device)' is not encrypted",
-    },
     {
         .error_fmt = QERR_DEVICE_LOCKED,
         .desc      = "Device '%(device)' is locked",
@@ -80,6 +80,10 @@ static const QErrorStringTable qerror_table[] = {
         .error_fmt = QERR_DEVICE_NOT_ACTIVE,
         .desc      = "Device '%(device)' has not been activated by the guest",
     },
+    {
+        .error_fmt = QERR_DEVICE_NOT_ENCRYPTED,
+        .desc      = "Device '%(device)' is not encrypted",
+    },
     {
         .error_fmt = QERR_DEVICE_NOT_FOUND,
         .desc      = "Device '%(device)' not found",

qerror.h

@@ -46,6 +46,8 @@ QError *qobject_to_qerror(const QObject *obj);
 
 /*
  * QError class list
+ * Please keep the definitions in alphabetical order.
+ * Use "grep '^#define QERR_' qerror.h | sort -c" to check.
  */
 #define QERR_BAD_BUS_FOR_DEVICE \
     "{ 'class': 'BadBusForDevice', 'data': { 'device': %s, 'bad_bus_type': %s } }"
@@ -62,9 +64,6 @@ QError *qobject_to_qerror(const QObject *obj);
 #define QERR_DEVICE_ENCRYPTED \
     "{ 'class': 'DeviceEncrypted', 'data': { 'device': %s } }"
 
-#define QERR_DEVICE_NOT_ENCRYPTED \
-    "{ 'class': 'DeviceNotEncrypted', 'data': { 'device': %s } }"
-
 #define QERR_DEVICE_INIT_FAILED \
     "{ 'class': 'DeviceInitFailed', 'data': { 'device': %s } }"
 
@@ -77,6 +76,9 @@ QError *qobject_to_qerror(const QObject *obj);
 #define QERR_DEVICE_NOT_ACTIVE \
     "{ 'class': 'DeviceNotActive', 'data': { 'device': %s } }"
 
+#define QERR_DEVICE_NOT_ENCRYPTED \
+    "{ 'class': 'DeviceNotEncrypted', 'data': { 'device': %s } }"
+
 #define QERR_DEVICE_NOT_FOUND \
     "{ 'class': 'DeviceNotFound', 'data': { 'device': %s } }"