Fix low hanging fruit items from valgrind memcheck results, mostly array deletes

src/core/displayencoder.cpp

@@ -653,6 +653,9 @@ cEncoder::cEncoder( int e, int f )
 
 cEncoder::~cEncoder() 
 {
+    sack_type::iterator itr;
+    for( itr = m_encodings.begin(); itr != m_encodings.end(); ++itr)
+        delete *itr;
 }
 
 bool cEncoder::RoundTrip() const

src/core/hashtable.h

@@ -316,6 +316,7 @@ cHashTable<KEY_TYPE, VAL_TYPE, COMPARE_OP, CONVERTER>::~cHashTable()
             }
         }
     }
+    delete [] mTable;
 }
 
 ////////////////////////////////////////////////////////////////////////////////

src/twparser/yylex.cpp

@@ -614,10 +614,10 @@ yy_scan::~yy_scan()
 {
     if (mustfree) {
         mustfree = 0;
-        delete(yytext);
+        delete [] yytext;
-        delete(state);
+        delete [] state;
 #ifdef YY_PRESERVE
-        delete(save);
+        delete [] save;
 #endif
     }
 }

src/twparser/yyparse.cpp

@@ -419,12 +419,12 @@ yy_parse::yy_parse(int sz)
 yy_parse::~yy_parse()
 {
     if (mustfree) {
-        delete stateStack;
+        delete [] stateStack;
-        delete valueStack;
+        delete [] valueStack;
     }
     stateStack = (short *) 0;
 #if YYDEBUG
-    delete typeStack;
+    delete [] typeStack;
 #endif
 }
 

src/twtest/refcountobj_t.cpp

@@ -66,7 +66,7 @@ cRefCountTestObj::~cRefCountTestObj()
         mChildren.pop_front();
     }
 
-    delete mpSomeMem;
+    delete [] mpSomeMem;
 }
 
 void cRefCountTestObj::AddChild(cRefCountTestObj* pChild)