Fix CREATE TABLE tokenization

The token skipping function did not check for a period or an opening
parenthesis when parsing the test. Also fixed a debug assertion when only
NULL values were inserted.

server/modules/routing/avrorouter/avro_rbr.c

@@ -498,6 +498,23 @@ int get_metadata_len(uint8_t type)
         } \
     }while(false)
 
+// Debug function for checking whether a row event consists of only NULL values
+static bool all_fields_null(uint8_t* null_bitmap, int ncolumns)
+{
+    bool rval = true;
+
+    for (long i = 0; i < ncolumns; i++)
+    {
+        if (!bit_is_set(null_bitmap, ncolumns, i))
+        {
+            rval = false;
+            break;
+        }
+    }
+
+    return rval;
+}
+
 /**
  * @brief Extract the values from a single row  in a row event
  *
@@ -525,7 +542,7 @@ uint8_t* process_row_event_data(TABLE_MAP *map, TABLE_CREATE *create, avro_value
     /** Store the null value bitmap */
     uint8_t *null_bitmap = ptr;
     ptr += (ncolumns + 7) / 8;
-    ss_dassert(ptr < end);
+    ss_dassert(ptr < end || (bit_is_set(null_bitmap, ncolumns, 0)));
 
     char trace[ncolumns][768];
     memset(trace, 0, sizeof(trace));

server/modules/routing/avrorouter/avro_schema.c

@@ -1251,7 +1251,7 @@ static void skip_token(const char** saved)
 {
     const char* ptr = *saved;
 
-    while (*ptr && !isspace(*ptr))
+    while (*ptr && !isspace(*ptr) && *ptr != '(' && *ptr != '.')
     {
         ptr++;
     }