[BUG] [C Client] replacement list_t to set_t

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• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• What's the version of OpenAPI Generator used?
• Have you search for related issues/PRs?
• What's the actual output vs expected output?
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Description

After last C Client updating and generate model by my json,
observe that list_t was change on set_t.
I'm not sure but looks that this "set_t" header also should to be in includes?

NEW MODEL GEN:
#include "set.h"
....
typedef struct location_data_t {
set_t *present_data; //primitive container
struct location_geo_ref_t *geo; //model
struct location_nds_tile_ref_t *tile; //model

} location_data_t;

location_data_t *location_data_create(
set_t *present_data,
location_geo_ref_t *geo,
location_nds_tile_ref_t *tile
);

OLD MODEL GEN:
typedef struct location_data_t {
list_t *present_data; //primitive container
struct location_geo_ref_t *geo; //model
struct location_nds_tile_ref_t *tile; //model

} location_data_t;

location_data_t *location_data_create(
list_t *present_data,
location_geo_ref_t *geo,
location_nds_tile_ref_t *tile
);

openapi-generator version

openapi-generator-cli 5.0.0-SNAPSHOT
commit : f91a5f7
built : 2020-06-01T16:49:51+03:00
source : https://github.com/openapitools/openapi-generator
docs : https://openapi-generator.tech/

OpenAPI declaration file content or url

"LocationGeoRef": {
"type": "object",
"properties": {
"lat": {
"maximum": 90,
"minimum": -90,
"type": "number"
},
"lon": {
"maximum": 180,
"minimum": -180,
"type": "number"
}
},
"required": [
"lat",
"lon"
]
},
"LocationNDSTileRef": {
"type": "object",
"properties": {
"level": {
"maximum": 15,
"minimum": 0,
"type": "integer"
},
"id": {
"type": "string"
}
},
"required": [
"level",
"id"
]
},
"LocationData": {
"type": "object",
"properties": {
"presentData": {
"type": "array",
"uniqueItems": true,
"items": {
"type": "string",
"enum": [
"GEO",
"TILE"
]
}
},
"geo": {
"$ref": "#/components/schemas/LocationGeoRef"
},
"tile": {
"$ref": "#/components/schemas/LocationNDSTileRef"
}
}
}
}

Command line used for generation

java -jar modules/openapi-generator-cli/target/openapi-generator-cli.jar generate -i ~/test/api-spec.json -g c -o ~/test/evtLOG_gen

Steps to reproduce

Related issues/PRs

Suggest a fix

Reproduce the C client generation with the openapi-generator-cli.jar command and the provided LocationData schema. Start by tracing the C generator entry point and its generated model output, then compare the set_t and list_t declarations and includes. Done means the generated C model uses the intended container type consistently and includes the required header.