Update pow.cpp

Author: joshafest

src/pow.cpp

@@ -187,7 +187,7 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
         // Litecoin: This fixes an issue where a 51% attack can change difficulty at will.
         // Go back the full period unless it's the first retarget after genesis. Code courtesy of Art Forz
         int blockstogoback = params.DifficultyAdjustmentInterval()-1;
-        if ((pindexLast->nHeight+1) != params.DifficultyAdjustmentInterval())
+        if ((pindexLast->nHeight+1) != params.DifficultyAdjustmentInterval()) // (pindexLast->nHeight+1) always > params.DifficultyAdjustmentInterval() So this is unnecessary 
             blockstogoback = params.DifficultyAdjustmentInterval();
 
         // Go back by what we want to be 14 days worth of blocks