Use std::vector API for construction of test data.

For constructing test scripts, use std::vector and, in particular,
std::vector::insert to insert 20 zero bytes rather than listing the full
array of bytes explicitly.  This makes the code easier to read and makes
it immediately obvious what the structure of the data is, without having
to count the zeros to understand it.

src/test/script_p2sh_tests.cpp

@@ -213,14 +213,22 @@ BOOST_AUTO_TEST_CASE(is)
     BOOST_CHECK(p2sh.IsPayToScriptHash());
 
     // Not considered pay-to-script-hash if using one of the OP_PUSHDATA opcodes:
-    static const unsigned char direct[] =    { OP_HASH160, 20, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, OP_EQUAL };
-    BOOST_CHECK(CScript(direct, direct+sizeof(direct)).IsPayToScriptHash());
-    static const unsigned char pushdata1[] = { OP_HASH160, OP_PUSHDATA1, 20, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, OP_EQUAL };
-    BOOST_CHECK(!CScript(pushdata1, pushdata1+sizeof(pushdata1)).IsPayToScriptHash());
-    static const unsigned char pushdata2[] = { OP_HASH160, OP_PUSHDATA2, 20,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, OP_EQUAL };
-    BOOST_CHECK(!CScript(pushdata2, pushdata2+sizeof(pushdata2)).IsPayToScriptHash());
-    static const unsigned char pushdata4[] = { OP_HASH160, OP_PUSHDATA4, 20,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, OP_EQUAL };
-    BOOST_CHECK(!CScript(pushdata4, pushdata4+sizeof(pushdata4)).IsPayToScriptHash());
+    std::vector<unsigned char> direct = {OP_HASH160, 20};
+    direct.insert(direct.end(), 20, 0);
+    direct.push_back(OP_EQUAL);
+    BOOST_CHECK(CScript(direct.begin(), direct.end()).IsPayToScriptHash());
+    std::vector<unsigned char> pushdata1 = {OP_HASH160, OP_PUSHDATA1, 20};
+    pushdata1.insert(pushdata1.end(), 20, 0);
+    pushdata1.push_back(OP_EQUAL);
+    BOOST_CHECK(!CScript(pushdata1.begin(), pushdata1.end()).IsPayToScriptHash());
+    std::vector<unsigned char> pushdata2 = {OP_HASH160, 20, 0};
+    pushdata2.insert(pushdata2.end(), 20, 0);
+    pushdata2.push_back(OP_EQUAL);
+    BOOST_CHECK(!CScript(pushdata2.begin(), pushdata2.end()).IsPayToScriptHash());
+    std::vector<unsigned char> pushdata4 = {OP_HASH160, 20, 0, 0, 0};
+    pushdata4.insert(pushdata4.end(), 20, 0);
+    pushdata4.push_back(OP_EQUAL);
+    BOOST_CHECK(!CScript(pushdata4.begin(), pushdata4.end()).IsPayToScriptHash());
 
     CScript not_p2sh;
     BOOST_CHECK(!not_p2sh.IsPayToScriptHash());