WaE Mac gcc is confused with >>= operator overload (it is not alone)

>>= operator overload turn the right-value of the operator into a
left value... which confuse the heck out of the compiler's detection
of use of unitialized variables (and also C-reader like me for
whom >>= means something else altogether...
(why on earth are we right-bitshifting... with an unitialized variable...
oh! fracking operator overload!!!)

connectivity/source/drivers/postgresql/pq_preparedstatement.cxx

@@ -681,7 +681,7 @@ void PreparedStatement::setObjectWithInfo(
     if( com::sun::star::sdbc::DataType::DECIMAL == targetSqlType ||
         com::sun::star::sdbc::DataType::NUMERIC == targetSqlType )
     {
-        double myDouble;
+        double myDouble = 0.0;
         OUString myString;
         if( x >>= myDouble )
         {

connectivity/source/drivers/postgresql/pq_statement.cxx

@@ -448,7 +448,7 @@ static Sequence< ::rtl::OUString > lookupKeys(
         while( enumeration->hasMoreElements() )
         {
             enumeration->nextElement() >>= set;
-            sal_Int32 keyType;
+            sal_Int32 keyType = 0;
             if( (set->getPropertyValue( st.TYPE ) >>= keyType ) &&
                 keyType == com::sun::star::sdbcx::KeyType::PRIMARY )
             {

connectivity/source/drivers/postgresql/pq_xtables.cxx

@@ -222,7 +222,7 @@ static void appendColumnList(
                 OUString type = sqltype2string( column );
                 if( isAutoIncrement )
                 {
-                    sal_Int32 dataType;
+                    sal_Int32 dataType = 0;
                     column->getPropertyValue( st.TYPE ) >>= dataType;
                     if( com::sun::star::sdbc::DataType::INTEGER == dataType )
                     {