better error handling

src/main.rs

@@ -22,15 +22,22 @@ impl History {
 	}
 	
 	fn update(&mut self) {
-		let clip = self.clipboard.get_text().unwrap();
+		let clipboard_result = self.clipboard.get_text();
 
+		match clipboard_result {
+			Ok(clipboard_content) => {
 				for entry in &self.entries {
-			if &clip == entry {
+					if &clipboard_content == entry {
 						return
 					}
 				}
 				println!("new entry");
-		self.entries.insert(0, clip);
+				self.entries.insert(0, clipboard_content);
+			}
+			Err(why) => {
+				eprintln!("could not fetch clipboard : {}", why);
+			}
+		}
 	}
 	
 	fn paste(&mut self) {