Include only necessary Magick++-headers.

src/http.cpp

@@ -121,7 +121,7 @@ void http::send_redirect(const Request &request)
     const char *env = std::getenv("HTTPS");
     string baseurl;
     if (env != nullptr && env[1] == 'n')
-    {
+    {   // "on"
         baseurl = "https://seccdn.libravatar.org";
     }
     else

src/image.cpp

@@ -18,6 +18,9 @@
 #include <sstream>
 #include <array>
 #include <algorithm>
+#include <Magick++/Geometry.h>
+#include <Magick++/Color.h>
+#include <Magick++/Exception.h>
 #include "libravatarserv.hpp"
 
 using std::cout;

src/libravatarserv.cpp

@@ -15,6 +15,7 @@
  */
 
 #include <iostream>
+#include <Magick++/Geometry.h>
 #include "version.hpp"
 #include "libravatarserv.hpp"
 

src/libravatarserv.hpp

@@ -24,7 +24,7 @@
 #endif
 #include <string>
 #include <map>
-#include <Magick++.h>
+#include <Magick++/Image.h>
 
 #if __cplusplus >= 201703L
     namespace fs = std::filesystem;