fix Tencent#1778 (part 1)

Author: pavel-pimenov

include/rapidjson/schema.h

@@ -475,12 +475,12 @@ class Schema {
             AssignIfExist(allOf_, *schemaDocument, p, value, GetAllOfString(), document);
             AssignIfExist(anyOf_, *schemaDocument, p, value, GetAnyOfString(), document);
             AssignIfExist(oneOf_, *schemaDocument, p, value, GetOneOfString(), document);
-        }
 
-        if (const ValueType* v = GetMember(value, GetNotString())) {
+            if (const ValueType* v = GetMember(value, GetNotString())) {
             schemaDocument->CreateSchema(&not_, p.Append(GetNotString(), allocator_), *v, document);
             notValidatorIndex_ = validatorCount_;
             validatorCount_++;
+            }
         }
 
         // Object
@@ -915,7 +915,7 @@ class Schema {
         }
 
         if (additionalPropertiesSchema_) {
-            if (additionalPropertiesSchema_ && context.patternPropertiesSchemaCount > 0) {
+            if (context.patternPropertiesSchemaCount > 0) {
                 context.patternPropertiesSchemas[context.patternPropertiesSchemaCount++] = additionalPropertiesSchema_;
                 context.valueSchema = typeless_;
                 context.valuePatternValidatorType = Context::kPatternValidatorWithAdditionalProperty;