Avoid period in lint message according to convention

Author: giraffate

clippy_lints/src/redundant_closure_call.rs

@@ -77,7 +77,7 @@ impl EarlyLintPass for RedundantClosureCall {
                         cx,
                         REDUNDANT_CLOSURE_CALL,
                         expr.span,
-                        "try not to call a closure in the expression where it is declared.",
+                        "try not to call a closure in the expression where it is declared",
                         |diag| {
                             if decl.inputs.is_empty() {
                                 let mut app = Applicability::MachineApplicable;

tests/ui/redundant_closure_call_early.stderr

@@ -1,12 +1,12 @@
-error: try not to call a closure in the expression where it is declared.
+error: try not to call a closure in the expression where it is declared
   --> $DIR/redundant_closure_call_early.rs:9:17
    |
 LL |     let mut k = (|m| m + 1)(i);
    |                 ^^^^^^^^^^^^^^
    |
    = note: `-D clippy::redundant-closure-call` implied by `-D warnings`
 
-error: try not to call a closure in the expression where it is declared.
+error: try not to call a closure in the expression where it is declared
   --> $DIR/redundant_closure_call_early.rs:12:9
    |
 LL |     k = (|a, b| a * b)(1, 5);

tests/ui/redundant_closure_call_fixable.stderr

@@ -1,4 +1,4 @@
-error: try not to call a closure in the expression where it is declared.
+error: try not to call a closure in the expression where it is declared
   --> $DIR/redundant_closure_call_fixable.rs:7:13
    |
 LL |     let a = (|| 42)();