Fix raw mode variable initialization

Fixed issue where raw mode variables were being re-initialized,
which was overwriting the values set in the prompt handling section.

coderai

@@ -2170,20 +2170,18 @@ async def chat_completions(request: ChatCompletionRequest, http_request: Request
             })
     
     # Handle raw mode - use generate() instead of generate_chat() for raw prompt completion
+    # Note: These may have been set earlier in the prompt handling section
+    # Initialize only if not already set
+    if 'use_raw_mode' not in locals():
         use_raw_mode = False
+    if 'raw_prompt_for_generation' not in locals():
         raw_prompt_for_generation = None
+    if 'raw_stop_sequences' not in locals():
         raw_stop_sequences = None
     
-    # Check if we set raw mode in the prompt handling section above
-    # The variables should already be set if raw was in force_reasoning_args
-    if "raw" in force_reasoning_args:
-        # Raw mode was already set up in the prompt handling section
-        # Just verify the variables exist
-        try:
-            _ = raw_prompt_for_generation
-            _ = raw_stop_sequences
-        except NameError:
-            # Variables not set - try to get tokenizer again
+    # Check if we need to set up raw mode (if not already done in prompt handling)
+    if "raw" in force_reasoning_args and not use_raw_mode:
+        # Set up raw mode using tokenizer
         tokenizer = None
         if hasattr(current_manager, 'backend') and hasattr(current_manager.backend, 'tokenizer'):
             tokenizer = current_manager.backend.tokenizer