Fix tidy errors

Author: jordanrh1

src/libpanic_unwind/seh.rs

@@ -119,8 +119,6 @@ mod imp {
     }
 }
 
-// TODO: this needs to be validated when WinEH for ARM is implemented in LLVM
-// It looks like ARM and ARM64 use the same _TypeInfo semantics as x64
 #[cfg(any(target_arch = "x86_64", target_arch = "arm"))]
 #[macro_use]
 mod imp {

src/libstd/sys/windows/c.rs

@@ -833,7 +833,8 @@ pub struct CONTEXT {
 // will not appear in the final documentation. This should be also defined for
 // other architectures supported by Windows such as ARM, and for historical
 // interest, maybe MIPS and PowerPC as well.
-#[cfg(all(rustdoc, not(any(target_arch = "x86_64", target_arch = "x86", target_arch = "aarch64", target_arch = "arm"))))]
+#[cfg(all(rustdoc, not(any(target_arch = "x86_64", target_arch = "x86",
+      target_arch = "aarch64", target_arch = "arm"))))]
 pub enum CONTEXT {}
 
 #[cfg(target_arch = "aarch64")]