Fix Error count in solidity compiler badge

apps/solidity-compiler/src/app/compiler-api.ts

@@ -264,7 +264,7 @@ export const CompilerApiMixin = (Base) => class extends Base {
           )
         })
       } else {
-        const count = (data.errors ? data.errors.filter(error => error.severity === 'error').length : 0) + data.error ? 1 : 0
+        const count = (data.errors ? data.errors.filter(error => error.severity === 'error').length : 0 + (data.error ? 1 : 0))
         this.emit('statusChanged', { key: count, title: `compilation failed with ${count} error${count > 1 ? 's' : ''}`, type: 'error' })
       }
       // Update contract Selection