Digit should be Mantype

It makes more sense that way, especially when directly cast to one.

Author: AZero13

src/CalcManager/CEngine/scicomm.cpp

@@ -601,9 +601,7 @@ void CCalcEngine::ProcessCommandWorker(OpCode wParam)
             m_HistoryCollector.AddCloseBraceToHistory();
 
             // Now get back the operation and opcode at the beginning of this parenthesis pair
-
-            m_openParenCount -= 1;
-            m_lastVal = m_parenVals[m_openParenCount];
+            m_lastVal = m_parenVals[--m_openParenCount];
             m_nOpCode = m_nOp[m_openParenCount];
 
             // m_bChangeOp should be true if m_nOpCode is valid

src/CalcManager/Ratpack/basex.cpp

@@ -298,7 +298,7 @@ void _divnumx(PNUMBER* pa, PNUMBER b, int32_t precision)
 
     while (cdigits++ < thismax && !zernum(rem))
     {
-        int32_t digit = 0;
+        MANTTYPE digit = 0;
         *ptrc = 0;
         while (!lessnum(rem, b))
         {
@@ -334,7 +334,7 @@ void _divnumx(PNUMBER* pa, PNUMBER b, int32_t precision)
     cdigits--;
     if (c->mant != ++ptrc)
     {
-        memmove(c->mant, ptrc, (int)(cdigits * sizeof(MANTTYPE)));
+        memmove(c->mant, ptrc, cdigits * sizeof(MANTTYPE));
     }
 
     if (!cdigits)

src/CalcViewModel/StandardCalculatorViewModel.cpp

@@ -573,7 +573,7 @@ void StandardCalculatorViewModel::HandleUpdatedOperandData(Command cmdenum)
                 temp[i] = data[j++];
             }
             temp[i] = L'\0';
-            commandIndex += 1;
+            commandIndex++;
         }
     }