refactor: avoid unnecessarily calling hasOwnProp

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/blas/ext/last-index-of/lib/assign.js

@@ -188,12 +188,14 @@ function assign( x, searchElement, fromIndex, out ) {
 		options = arguments[ 4 ];
 		hasOptions = true;
 	}
-	if ( hasOptions && !isPlainObject( options ) ) {
-		throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
-	}
-	// Resolve provided options...
-	if ( hasOwnProp( options, 'dim' ) ) {
-		opts.dims[ 0 ] = options.dim;
+	if ( hasOptions ) {
+		if ( !isPlainObject( options ) ) {
+			throw new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
+		}
+		// Resolve provided options...
+		if ( hasOwnProp( options, 'dim' ) ) {
+			opts.dims[ 0 ] = options.dim;
+		}
 	}
 	// Resolve the list of non-reduced dimensions:
 	sh = getShape( x );