qerror: add QERR_JSON_PARSE_ERROR to qerror.c

Missing from previous addition of error to qerror.h. Needed for
qerror_format() and friends.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@gmail.com>

qerror.c

@@ -140,6 +140,11 @@ static const QErrorStringTable qerror_table[] = {
         .error_fmt = QERR_JSON_PARSING,
         .desc      = "Invalid JSON syntax",
     },
+    {
+        .error_fmt = QERR_JSON_PARSE_ERROR,
+        .desc      = "JSON parse error, %(message)",
+
+    },
     {
         .error_fmt = QERR_KVM_MISSING_CAP,
         .desc      = "Using KVM without %(capability), %(feature) unavailable",