Resolve collapsible_if lint in generic associated type equality parsing

    error: this `if` statement can be collapsed
       --> src/path.rs:255:17
        |
    255 | /                 if match &argument {
    256 | |                     Type::Path(argument)
    257 | |                         if argument.qself.is_none()
    258 | |                             && argument.path.leading_colon.is_none()
    ...   |
    281 | |                     }
    282 | |                 }
        | |_________________^
        |
        = note: `-D clippy::collapsible-if` implied by `-D clippy::all`
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if

src/path.rs

@@ -264,21 +264,19 @@ pub mod parsing {
                         }
                     }
                     _ => false,
+                } && if input.peek(Token![=]) {
+                    input.parse::<Token![=]>()?;
+                    input.parse::<Type>()?;
+                    true
+                } else if input.peek(Token![:]) {
+                    input.parse::<Token![:]>()?;
+                    input.call(constraint_bounds)?;
+                    true
+                } else {
+                    false
                 } {
-                    if if input.peek(Token![=]) {
-                        input.parse::<Token![=]>()?;
-                        input.parse::<Type>()?;
-                        true
-                    } else if input.peek(Token![:]) {
-                        input.parse::<Token![:]>()?;
-                        input.call(constraint_bounds)?;
-                        true
-                    } else {
-                        false
-                    } {
-                        let verbatim = verbatim::between(begin, input);
-                        return Ok(GenericArgument::Type(Type::Verbatim(verbatim)));
-                    }
+                    let verbatim = verbatim::between(begin, input);
+                    return Ok(GenericArgument::Type(Type::Verbatim(verbatim)));
                 }
             }