chore: fix lint error (#8136)

Fixes a few linting errors

Author: crisbeto

src/lib/core/datetime/date-adapter.ts

@@ -245,7 +245,7 @@ export abstract class DateAdapter<D> {
       let firstValid = this.isValid(first);
       let secondValid = this.isValid(second);
       if (firstValid && secondValid) {
-        return !this.compareDate(first, second)
+        return !this.compareDate(first, second);
       }
       return firstValid == secondValid;
     }

src/lib/core/datetime/native-date-adapter.spec.ts

@@ -18,15 +18,15 @@ describe('NativeDateAdapter', () => {
     }).compileComponents();
   }));
 
-  beforeEach(inject([DateAdapter], (d: NativeDateAdapter) => {
-    adapter = d;
+  beforeEach(inject([DateAdapter], (dateAdapter: NativeDateAdapter) => {
+    adapter = dateAdapter;
 
     assertValidDate = (d: Date | null, valid: boolean) => {
       expect(adapter.isDateInstance(d)).not.toBeNull(`Expected ${d} to be a date instance`);
       expect(adapter.isValid(d!)).toBe(valid,
           `Expected ${d} to be ${valid ? 'valid' : 'invalid'},` +
           ` but was ${valid ? 'invalid' : 'valid'}`);
-    }
+    };
   }));
 
   it('should get year', () => {

src/material-moment-adapter/adapter/moment-date-adapter.spec.ts

@@ -24,17 +24,17 @@ describe('MomentDateAdapter', () => {
     }).compileComponents();
   }));
 
-  beforeEach(inject([DateAdapter], (d: MomentDateAdapter) => {
+  beforeEach(inject([DateAdapter], (dateAdapter: MomentDateAdapter) => {
     moment.locale('en');
-    adapter = d;
+    adapter = dateAdapter;
     adapter.setLocale('en');
 
     assertValidDate = (d: moment.Moment | null, valid: boolean) => {
       expect(adapter.isDateInstance(d)).not.toBeNull(`Expected ${d} to be a date instance`);
       expect(adapter.isValid(d!)).toBe(valid,
           `Expected ${d} to be ${valid ? 'valid' : 'invalid'},` +
           ` but was ${valid ? 'invalid' : 'valid'}`);
-    }
+    };
   }));
 
   it('should get year', () => {