Default-initialize number members and fix mantissa size

src/CalcManager/Ratpack/conv.cpp

@@ -185,7 +185,7 @@ NUMBER _createnum( _In_ uint32_t size )
 {
     NUMBER num = NUMBER();
     // Fill mantissa vector with zeros
-    num.mant.insert(num.mant.end(), size - 1, 0);
+    num.mant.insert(num.mant.end(), size, 0);
     return( num );
 }
 

src/CalcManager/Ratpack/ratpak.h

@@ -56,10 +56,10 @@ typedef enum eANGLE_TYPE ANGLE_TYPE;
 
 typedef struct _number
 {
-    int32_t sign;        // The sign of the mantissa, +1, or -1
+    int32_t sign = 1;    // The sign of the mantissa, +1, or -1
-    int32_t cdigit;    // The number of digits, or what passes for digits in the
+    int32_t cdigit = 0;  // The number of digits, or what passes for digits in the
                          // radix being used.
-    int32_t exp;       // The offset of digits from the radix point
+    int32_t exp = 0;     // The offset of digits from the radix point
                          // (decimal point in radix 10)
     std::vector<MANTTYPE> mant;
 } NUMBER;