Replace more rand() % NUM by randranges

src/test/pmt_tests.cpp

@@ -21,7 +21,7 @@ class CPartialMerkleTreeTester : public CPartialMerkleTree
 public:
     // flip one bit in one of the hashes - this should break the authentication
     void Damage() {
-        unsigned int n = insecure_rand() % vHash.size();
+        unsigned int n = insecure_randrange(vHash.size());
         int bit = insecure_randrange(256);
         *(vHash[n].begin() + (bit>>3)) ^= 1<<(bit&7);
     }