un-confuse lupdate: make #ifdef'd braces symmetrical

as a side effect, this also de-duplicates the code, which is good in its
own right.

Change-Id: I504cb518276fdf610639c3337e3842570b97815f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: John Layt <jlayt@kde.org>

src/corelib/tools/qlocale_tools.cpp

@@ -2370,10 +2370,9 @@ static char *_qdtoa( NEEDS_VOLATILE double d, int mode, int ndigits, int *decpt,
         }
 
     b = d2b(d, &be, &bbits);
-#ifdef Sudden_Underflow
     i = (int)(getWord0(d) >> Exp_shift1 & (Exp_mask>>Exp_shift1));
-#else
-    if ((i = int(getWord0(d) >> Exp_shift1 & (Exp_mask>>Exp_shift1))) != 0) {
+#ifndef Sudden_Underflow
+    if (i != 0) {
 #endif
         d2 = d;
         setWord0(&d2, getWord0(d2) & Frac_mask1);