avoid "unused variable" warnings

[[Imported from SVN: r5553]]

common/test/deprtuplestest.cc

@@ -235,7 +235,8 @@ int tuple_tr1_test()
 
 
   // get the second element
-  tuple_element<1,tuple<int,double> >::type d=get<1>(t);
+  tuple_element<1,tuple<int,double> >::type d;
+  d=get<1>(t);
 
   get<0>(t)=16;
 

common/test/tuplestest.cc

@@ -235,7 +235,8 @@ int tuple_tr1_test()
 
 
   // get the second element
-  tuple_element<1,tuple<int,double> >::type d=get<1>(t);
+  tuple_element<1,tuple<int,double> >::type d;
+  d=get<1>(t);
 
   get<0>(t)=16;
 

common/test/utilitytest.cc

@@ -51,11 +51,11 @@ int main(int argc, char** argv)
     ret=4;
   }
 
-  int i=3;
-  int *ii=&i;
-  double d=2;
-  long l= 4;
-  char c= 's';
+  int i = 3;
+  int *ii; ii = &i;
+  double d; d = 2;
+  long l = 4;
+  char c = 's';
 
   typedef Dune::tuple<int*,char*,long*,char*> PointerTuple1;