[MINOR] Fix sparse transpose self multiply
diff --git a/src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixMult.java b/src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixMult.java
index db61927..228aec7 100644
--- a/src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixMult.java
+++ b/src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixMult.java
@@ -1932,7 +1932,7 @@
 					if( alen == n ) { //dense row
 						for( int i=rl; i<ru; i++ ) {
 							vectMultiplyAdd(avals[i], avals,
-								c.values(i), i, c.pos(i), n-i);
+								c.values(i), i, c.pos(i) + i, n-i);
 						}
 					}
 					else { //non-full sparse row