Revert "reduce unnecessary realloc'ing"

This reverts commit 9f6e6fab, which is wrong, as
it would cause the functions to now try to read aReadBytes.getLength() bytes if
that is initially larger than nBytesToRead.

io/source/acceptor/acc_socket.cxx

@@ -198,12 +198,13 @@ namespace io_acceptor {
         {
             notifyListeners(this, &_started, callStarted);
 
-            if( aReadBytes.getLength() < nBytesToRead )
+            if( aReadBytes.getLength() != nBytesToRead )
             {
                 aReadBytes.realloc( nBytesToRead );
             }
 
-            sal_Int32 i = m_socket.read( aReadBytes.getArray()  , aReadBytes.getLength() );
+            sal_Int32 i = 0;
+            i = m_socket.read( aReadBytes.getArray()  , aReadBytes.getLength() );
 
             if(i != nBytesToRead)
             {
@@ -219,10 +220,7 @@ namespace io_acceptor {
 
                 throw ioException;
             }
-            if( i < aReadBytes.getLength() )
-            {
-                aReadBytes.realloc( i );
-            }
+
             return i;
         }
         else

io/source/connector/ctr_pipe.cxx

@@ -49,16 +49,11 @@ namespace stoc_connector {
     {
         if( ! m_nStatus )
         {
-            if( aReadBytes.getLength() < nBytesToRead )
+            if( aReadBytes.getLength() != nBytesToRead )
             {
                 aReadBytes.realloc( nBytesToRead );
             }
-            sal_Int32 n = m_pipe.read( aReadBytes.getArray()  , aReadBytes.getLength() );
-            if( n < aReadBytes.getLength() )
-            {
-                aReadBytes.realloc( n );
-            }
-            return n;
+            return m_pipe.read( aReadBytes.getArray()  , aReadBytes.getLength() );
         }
         else {
             throw IOException();

io/source/connector/ctr_socket.cxx

@@ -123,7 +123,7 @@ namespace stoc_connector {
         {
             notifyListeners(this, &_started, callStarted);
 
-            if( aReadBytes.getLength() < nBytesToRead )
+            if( aReadBytes.getLength() != nBytesToRead )
             {
                 aReadBytes.realloc( nBytesToRead );
             }
@@ -143,10 +143,7 @@ namespace stoc_connector {
 
                 throw ioException;
             }
-            if( i < aReadBytes.getLength() )
-            {
-                aReadBytes.realloc( i );
-            }
+
             return i;
         }
         else