Apply suggestions from code review

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>

examples/command/command.cpp

@@ -693,7 +693,7 @@ int main(int argc, char ** argv) {
 
     struct whisper_context_params cparams = whisper_context_default_params();
     cparams.use_gpu = params.use_gpu;
-    cparams.fold_lowercase = params.model_fold_lc;
+    cparams.vocab_lc = params.model_fold_lc;
 
     struct whisper_context * ctx = whisper_init_from_file_with_params(params.model.c_str(), cparams);
 

examples/main/main.cpp

@@ -896,7 +896,7 @@ int main(int argc, char ** argv) {
 
     struct whisper_context_params cparams = whisper_context_default_params();
     cparams.use_gpu = params.use_gpu;
-    cparams.fold_lowercase = params.model_fold_lc;
+    cparams.vocab_lc = params.model_fold_lc;
 
     if (!params.dtw.empty()) {
         cparams.dtw_token_timestamps = true;

whisper.cpp

@@ -1384,9 +1384,10 @@ static bool whisper_model_load(struct whisper_model_loader * loader, whisper_con
             }
 
             // If requested, output all text as lowercase.
-            if (wctx.params.fold_lowercase)
+            if (wctx.params.vocab_lc) {
                 std::transform(word.begin(), word.end(), word.begin(),
                     [](unsigned char c) { return std::tolower(c); });
+            }
 
             vocab.token_to_id[word] = i;
             vocab.id_to_token[i] = word;

whisper.h

@@ -116,7 +116,7 @@ extern "C" {
         int   gpu_device;  // CUDA device
 
         // Fold language tokens to lowercase
-        bool fold_lowercase;
+        bool vocab_lc;
 
         // [EXPERIMENTAL] Token-level timestamps with DTW
         bool dtw_token_timestamps;