Add MAIN_ARENA_CAPACITY constant

src/main.c

@@ -13,6 +13,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+#define MAIN_ARENA_CAPACITY 30 * 1024 * 1024
+
 #define WINDOW_WIDTH 800
 #define WINDOW_HEIGHT 600
 
@@ -37,7 +39,7 @@ int main(int argc, char *argv[]) {
   int exit_code = EXIT_SUCCESS;
 
   Arena *arena = NULL;
-  if (!wapp_mem_arena_init(&arena, 10 * 1024 * 1024)) {
+  if (!wapp_mem_arena_init(&arena, MAIN_ARENA_CAPACITY)) {
     return EXIT_FAILURE;
   }