remove not needed expression fragments

alib2algo/src/string/properties/BorderArray.h

@@ -35,10 +35,10 @@ ext::vector<size_t> BorderArray::construct(const string::LinearString < SymbolTy
 	res[1] = 0;
 	for(size_t i = 1; i < w.size(); i++) {
 		size_t b = res[i];
-		while (b > 0 && w[i + 1 - 1] != w[b + 1 - 1])
+		while (b > 0 && w[i] != w[b])
 			b = res[b];
-		if(w[i + 1 - 1] == w[b + 1 - 1])
+		if(w[i] == w[b])
 			res[i + 1] = b + 1;
 		else
 			res[i + 1] = 0;