Make global curl static

data/tests/text.html

@@ -1 +1 @@
-Hello World!
+The quick brown fox jumps over the lazy dog.

src/fetch.cpp

@@ -7,7 +7,7 @@
 
 #include <curl/curl.h>
 
-CURL* g_curl;
+static CURL* g_curl;
 
 size_t curl_write_func(void* ptr, size_t size, size_t num, std::string* str)
 {

src/main.cpp

@@ -13,8 +13,8 @@ int main()
 {
     init_curl();
 
-    //    std::optional<std::string> page_data = fetch_url("test://text.html");
-    std::optional<std::string> page_data = fetch_url("https://example.com");
+    std::optional<std::string> page_data = fetch_url("test://text.html");
+    //    std::optional<std::string> page_data = fetch_url("https://example.com");
 
     SetConfigFlags(ConfigFlags::FLAG_WINDOW_RESIZABLE | ConfigFlags::FLAG_MSAA_4X_HINT | ConfigFlags ::FLAG_VSYNC_HINT);
 
@@ -27,8 +27,8 @@ int main()
     SetTargetFPS(60);
 
     bool is_editing_url = false;
-    std::string url_input = "https://example.com";
-    //    std::string url_input = "test://text.html";
+    //    std::string url_input = "https://example.com";
+    std::string url_input = "test://text.html";
     url_input.reserve(1024);
     float scroll_pos = 0.0f;