Fixing name of lint, adding test case

src/overflow_check_conditional.rs

@@ -9,15 +9,15 @@ use utils::{span_lint, span_help_and_lint, snippet, span_lint_and_then};
 /// **Known problems:** None.
 ///
 /// **Example:** `a + b < a`
-declare_lint!(pub OVERFLOW_CHECK_CONDTIONAL, Warn,
+declare_lint!(pub OVERFLOW_CHECK_CONDITIONAL, Warn,
               "Using overflow checks which are likely to panic");
 
 #[derive(Copy, Clone)]
 pub struct OverflowCheckConditional;
 
 impl LintPass for OverflowCheckConditional {
     fn get_lints(&self) -> LintArray {
-        lint_array!(OVERFLOW_CHECK_CONDTIONAL)
+        lint_array!(OVERFLOW_CHECK_CONDITIONAL)
     }
 }
 

tests/compile-fail/overflow_check_conditional.rs

@@ -6,8 +6,12 @@
 fn main() {
 	let a: u32 = 1;
 	let b: u32 = 2;
+	let c: u32 = 3;
 	if a + b < a {
 
+	}
+	if a + b < c {
+
 	}
 }