Remove unneeded variables and initialisations in easycsv_read_value

Signed-off-by: Pradana AUMARS <paumars@courrier.dev>

src/easycsv.c

@@ -109,8 +109,8 @@ easycsv_read_value(const easycsv *csv,
 		  unsigned int row)
 {
   char str_row[BUFSIZ];
-  size_t st = 0;
-  char *pch, *pch_end, *val;
+  size_t st;
+  char *pch, *val;
   if (row == 0) {
     easycsv_error(EASYCSV_ZEROROW, NULL);
     return NULL;