Fix easycsv_find_num_value

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

src/easycsv.c

@@ -137,7 +137,7 @@ easycsv_find_num_value(const easycsv* csv,
   const unsigned int rows = easycsv_print_rows(csv);
   
   for (unsigned int row_l = 1; row_l <= rows; row_l++) {
-    for (unsigned int col_l = 1; col_l <= cols; col_l++) {
+    for (unsigned int col_l = 1; col_l < cols; col_l++) {
       str = easycsv_read_value(csv, col_l, row_l);
       if (strcmp(str, value) == 0) {
         num++;