fix(01): Fix memory leaks

01/src/main.c

@@ -72,14 +72,14 @@ int main(int argc, char *argv[])
   rewind(file);
 
   for (uint i = 0; i < lines; i++) {
-    char *buffer = NULL;
-    size_t bufferSize = 0;
     if (getline(&buffer, &bufferSize, file) == -1)
       break;
 
     sscanf(buffer, "%d   %d", &array1[i], &array2[i]);
   }
 
+  free(buffer);
+  bufferSize = 0;
   fclose(file);
 
   qsort(array1, lines, sizeof(int), compareInt);

default.nix

@@ -4,9 +4,10 @@ in
 pkgs.mkShell {
   packages = with pkgs; [
     # Choose the build tools that you need
+    cmake
     gcc
     gdb
-    cmake
+    valgrind
   ];
 }