fix: use filename instead of download function call for lcm lora

do not require lcm lora to be downloaded for metadata parsing

Author: mashb1t

modules/config.py

@@ -474,6 +474,7 @@ def add_ratio(x):
 
 model_filenames = []
 lora_filenames = []
+sdxl_lcm_lora = 'sdxl_lcm_lora.safetensors'
 
 
 def get_model_filenames(folder_paths, name_filter=None):
@@ -533,9 +534,9 @@ def downloading_sdxl_lcm_lora():
     load_file_from_url(
         url='https://huggingface.co/lllyasviel/misc/resolve/main/sdxl_lcm_lora.safetensors',
         model_dir=paths_loras[0],
-        file_name='sdxl_lcm_lora.safetensors'
+        file_name=sdxl_lcm_lora
     )
-    return 'sdxl_lcm_lora.safetensors'
+    return sdxl_lcm_lora
 
 
 def downloading_controlnet_canny():

modules/meta_parser.py

@@ -379,7 +379,8 @@ def parse_json(self, metadata: str) -> dict:
 
         if 'lora_hashes' in data:
             lora_filenames = modules.config.lora_filenames.copy()
-            lora_filenames.remove(modules.config.downloading_sdxl_lcm_lora())
+            if modules.config.sdxl_lcm_lora in lora_filenames:
+                lora_filenames.remove(modules.config.sdxl_lcm_lora)
             for li, lora in enumerate(data['lora_hashes'].split(', ')):
                 lora_name, lora_hash, lora_weight = lora.split(': ')
                 for filename in lora_filenames:
@@ -460,7 +461,8 @@ def get_scheme(self) -> MetadataScheme:
     def parse_json(self, metadata: dict) -> dict:
         model_filenames = modules.config.model_filenames.copy()
         lora_filenames = modules.config.lora_filenames.copy()
-        lora_filenames.remove(modules.config.downloading_sdxl_lcm_lora())
+        if modules.config.sdxl_lcm_lora in lora_filenames:
+            lora_filenames.remove(modules.config.sdxl_lcm_lora)
 
         for key, value in metadata.items():
             if value in ['', 'None']: