tidy: remove not needed signed -> unsigned conversion

alib2algo/src/string/simplify/NormalizeRotation.h

@@ -32,18 +32,22 @@ template < class SymbolType >
 string::CyclicString < SymbolType > NormalizeRotation::normalize(const string::CyclicString < SymbolType > & string) {
 	const ext::vector < SymbolType > & data = string.getContent ( );
 	int * f = new int [ 2 * data.size ( ) ]; /** Knuth–Morris–Pratt like array */
-	int k = 0; /** Least circular string shift value */
+	size_t k = 0; /** Least circular string shift value */
 	f [ 0 ] = -1;
 	for ( size_t j = 1; j < 2 * data.size ( ); ++j ) {
 		int i = f [ j - k - 1 ];
 		while ( i != -1 && data [ j % data.size ( ) ] != data [ ( k + i + 1 ) % data.size ( ) ] ) {
-			if ( data [ j % data.size ( ) ] < data [ ( k + i + 1 ) % data.size ( ) ] ) k = j - i - 1;
+			if ( data [ j % data.size ( ) ] < data [ ( k + i + 1 ) % data.size ( ) ] )
+				k = j - i - 1;
 			i = f [ i ];
 		}
 		if ( i == -1 && data [ j % data.size ( ) ] != data [ k % data.size ( ) ] ) {
-			if ( data [ j % data.size ( ) ] < data [ ( k + i + 1 ) % data.size ( ) ] ) k = j;
+			if ( data [ j % data.size ( ) ] < data [ ( k + i + 1 ) % data.size ( ) ] )
+				k = j;
 			f [ j - k ] = -1;
-		} else f [ j - k ] = i + 1;
+		} else {
+			f [ j - k ] = i + 1;
+		}
 	}
 	delete [] f;