Two non-const strings that we missed.

Author: BenBrock

include/binsparse/read_matrix.h

@@ -115,7 +115,7 @@ size_t bsp_final_dot(const char* str) {
   return dot_idx;
 }
 
-bsp_matrix_t bsp_read_matrix(const char* file_name, char* group) {
+bsp_matrix_t bsp_read_matrix(const char* file_name, const char* group) {
   if (group == NULL) {
     size_t idx = bsp_final_dot(file_name);
     if (strcmp(file_name + idx, ".hdf5") == 0 ||

include/binsparse/write_matrix.h

@@ -121,7 +121,7 @@ int bsp_write_matrix_to_group(hid_t f, bsp_matrix_t matrix, cJSON* user_json,
   return 0;
 }
 
-int bsp_write_matrix(const char* fname, bsp_matrix_t matrix, char* group,
+int bsp_write_matrix(const char* fname, bsp_matrix_t matrix, const char* group,
                      cJSON* user_json, int compression_level) {
   if (group == NULL) {
     hid_t f = H5Fcreate(fname, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);