finish clippy exercises

exercises/clippy/clippy1.rs

@@ -6,12 +6,10 @@
 // check clippy's suggestions from the output to solve the exercise.
 // Execute `rustlings hint clippy1` for hints :)
 
-// I AM NOT DONE
-
 fn main() {
     let x = 1.2331f64;
     let y = 1.2332f64;
-    if y != x {
+    if (y - x).abs() > 1e-4 {
         println!("Success!");
     }
 }

exercises/clippy/clippy2.rs

@@ -1,13 +1,11 @@
 // clippy2.rs
 // Make me compile! Execute `rustlings hint clippy2` for hints :)
 
-// I AM NOT DONE
-
 fn main() {
     let mut res = 42;
     let option = Some(12);
-    for x in option {
-        res += x;
+    if let Some(x) = option {
+        res += x
     }
     println!("{}", res);
 }