replace matches with if lets

src/patch/main.rs

@@ -378,16 +378,10 @@ impl Iterator for SendFileIterator {
 fn main() {
     println!("[patch] starting server");
 
-    match std::fs::read_dir("patchfiles/") {
-        Ok(_) => {},
-        Err(_) => {
-            match std::fs::create_dir("patchfiles/") {
-                Ok(_) => {},
-                Err(_) => {
+    if let Err(_) = std::fs::read_dir("patchfiles/") {
+        if let Err(_) = std::fs::create_dir("patchfiles/") {
             panic!("Could not create patchfiles directory!");
-                },
         }
-        },
     }
     let (patch_file_tree, patch_file_lookup) = generate_patch_tree("patchfiles/");
     println!("[patch] files to patch:");