Fixed many casting issues.

src/file/csv.c

@@ -107,7 +107,7 @@ bool _csvBufferRowParserCallback(
   }
 
   // Determine string info for the cell
-  int32_t length = strlen(data);
+  int32_t length = (int32_t)strlen(data);
   int32_t offset = (column * CSV_CELL_SIZE_MAX);
 
   // Now copy the string data to the buffer
@@ -144,7 +144,6 @@ bool _csvBufferRowWithHeadersCallback(
   assetbuffer_t *asset, void *user, int32_t row, csvrow_t *csv
 ) {
   csvbufferrowwithheadersdata_t *data = (csvbufferrowwithheadersdata_t *)user;
-  int32_t i;
 
   // Take the headers for row 0
   if(row == 0) {