if_not_else: make lint adhere to lint message convention

Author: matthiaskrgr

clippy_lints/src/if_not_else.rs

@@ -60,7 +60,7 @@ impl EarlyLintPass for IfNotElse {
                             cx,
                             IF_NOT_ELSE,
                             item.span,
-                            "Unnecessary boolean `not` operation",
+                            "unnecessary boolean `not` operation",
                             None,
                             "remove the `!` and swap the blocks of the `if`/`else`",
                         );
@@ -70,7 +70,7 @@ impl EarlyLintPass for IfNotElse {
                             cx,
                             IF_NOT_ELSE,
                             item.span,
-                            "Unnecessary `!=` operation",
+                            "unnecessary `!=` operation",
                             None,
                             "change to `==` and swap the blocks of the `if`/`else`",
                         );

clippy_lints/src/use_self.rs

@@ -50,7 +50,7 @@ declare_clippy_lint! {
     /// ```
     pub USE_SELF,
     nursery,
-    "Unnecessary structure name repetition whereas `Self` is applicable"
+    "unnecessary structure name repetition whereas `Self` is applicable"
 }
 
 declare_lint_pass!(UseSelf => [USE_SELF]);

src/lintlist/mod.rs

@@ -2498,7 +2498,7 @@ pub static ref ALL_LINTS: Vec<Lint> = vec![
     Lint {
         name: "use_self",
         group: "nursery",
-        desc: "Unnecessary structure name repetition whereas `Self` is applicable",
+        desc: "unnecessary structure name repetition whereas `Self` is applicable",
         deprecation: None,
         module: "use_self",
     },

tests/ui/if_not_else.stderr

@@ -1,4 +1,4 @@
-error: Unnecessary boolean `not` operation
+error: unnecessary boolean `not` operation
   --> $DIR/if_not_else.rs:9:5
    |
 LL | /     if !bla() {
@@ -11,7 +11,7 @@ LL | |     }
    = note: `-D clippy::if-not-else` implied by `-D warnings`
    = help: remove the `!` and swap the blocks of the `if`/`else`
 
-error: Unnecessary `!=` operation
+error: unnecessary `!=` operation
   --> $DIR/if_not_else.rs:14:5
    |
 LL | /     if 4 != 5 {