Fix compiler warning

qurlrecode.cpp:481:24: warning: ‘action’ may be used uninitialized in
this function [-Wmaybe-uninitialized]

Change-Id: I638b65218d1875667e2c60a5720ecda87202b82f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/io/qurlrecode.cpp

@@ -483,6 +483,8 @@ static int recode(QString &result, const ushort *begin, const ushort *end, QUrl:
         // try a run where no change is necessary
         for ( ; input != end; ++input) {
             c = *input;
+            if (c < 0x20U)
+                action = EncodeCharacter;
             if (c < 0x20U || c >= 0x80U) // also: (c - 0x20 < 0x60U)
                 goto non_trivial;
             action = EncodingAction(actionTable[c - ' ']);
@@ -534,9 +536,6 @@ non_trivial:
             }
         }
 
-        if (decoded < 0x20)
-            action = EncodeCharacter;
-
         // there are six possibilities:
         //  current \ action  | DecodeCharacter | LeaveCharacter | EncodeCharacter
         //      decoded       |    1:leave      |    2:leave     |    3:encode