Problem with common/string.hpp for non-GCC compilers

Trying to build modules/filter/email.cpp from 0.60.1.1 on the IRIX C++
and AIX C++ compilers I get the error (from the IRIX C++ compiler):
  cc-1080 CC: ERROR File = ./common/string.hpp, Line = 495
    A storage class cannot be specified at this point.

      template<> static inline void swap(acommon::String & x, acommon::String & y) {return x.swap(y);}
                 ^

The patch below removed the error. Is it correct?

-- 
albert chin ([email protected])

-- snip snip
--- common/string.hpp.orig	Sun Dec  5 21:13:31 2004
+++ common/string.hpp	Sun Dec  5 21:13:35 2004
@@ -492,7 +492,7 @@
 
 namespace std
 {
-  template<> inline void swap(acommon::String & x, acommon::String & y) {return x.swap(y);}
+  template<> static inline void swap(acommon::String & x, acommon::String & y) {return x.swap(y);}
 }
 
 #endif