refactor: reduce branch complexity

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

Author: kgryte

lib/node_modules/@stdlib/blas/ext/base/ndarray/dlast-index-of/lib/main.js

@@ -71,9 +71,8 @@ function dlastIndexOf( arrays ) {
 	fromIndex = ndarraylike2scalar( arrays[ 2 ] );
 
 	if ( fromIndex < 0 ) {
-		if ( fromIndex >= -N ) {
-			fromIndex += N;
-		} else {
+		fromIndex += N;
+		if ( fromIndex < 0 ) {
 			return -1;
 		}
 	} else if ( fromIndex >= N ) {