V3 PATCH: Correct type-name usage in basic_string.tcc

[Gabriel Dos Reis <gdr at codesourcery dot com>]

I caught this while compiling the library with -ansi -pedantic.
Maybe we might want to add those flags one day.

The build failed with

/BASE/dosreis/egcs/libstdc++-v3/include/bits/basic_string.h: In function 
   `std::basic_string<_CharT, _Traits, _Alloc> std::operator+(_CharT, const 
   std::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char, _Traits = 
   std::char_traits<char>, _Alloc = std::allocator<char>]':
/BASE/dosreis/egcs/libstdc++-v3/src/string-inst.cc:51:   instantiated from here
/BASE/dosreis/egcs/libstdc++-v3/include/bits/basic_string.h:552: invalid use of
   member `std::basic_string<char, std::char_traits<char>, std::allocator<char>
   >::size_type'


Bootstrapped and tested on solaris-2.7, no regression.  Installed on
both mainline and branch.


-- Gaby
CodeSourcery, LLC                       http://www.codesourcery.com

2001-03-15  Gabriel Dos Reis  <gdr@merlin.codesourcery.com>

	* include/bits/basic_string.tcc (operator+): Fix thinko.

Index: include/bits/basic_string.tcc
===================================================================
RCS file: /cvs/gcc/egcs/libstdc++-v3/include/bits/basic_string.tcc,v
retrieving revision 1.3
diff -p -r1.3 basic_string.tcc
*** basic_string.tcc	2001/02/16 00:42:19	1.3
--- basic_string.tcc	2001/03/15 08:45:20
*************** namespace std
*** 549,555 ****
        __string_type __str;
        __size_type __len = __rhs.size();
        __str.reserve(__len + 1);
!       __str.append(__string_type::size_type(1), __lhs);
        __str.append(__rhs);
        return __str;
      }
--- 549,555 ----
        __string_type __str;
        __size_type __len = __rhs.size();
        __str.reserve(__len + 1);
!       __str.append(__size_type(1), __lhs);
        __str.append(__rhs);
        return __str;
      }