Broken 'C' compilation when building from Master with MSVC

[John Emmas <johne53 tiscali co uk>]

Hi guys,

I just updated from git master and noticed a problem when building with 
MSVC...

Round about line 427, 'gtypes.h' has added a small section with some 
function definitions that look like this:-

      static inline gboolean _GLIB_CHECKED_ADD_U32 (guint32 *dest, 
guint32 a, guint32 b) {
          *dest = a + b; return *dest >= a; }

Unfortunately, MSVC won't compile the above if I try to compile as 'C' 
code.  It compiles fine if I comment out the 'inline' keyword - but 
otherwise, I get the following compiler error for each of the newly 
added functions in that section:-

      error C2054: expected '(' to follow 'inline'

FWIW these particular sections compile fine if I build as C++. 
Unfortunately though, there are quite a few other areas that won't 
compile as C++ (with MSVC).  So currently I can't build either as C or 
C++.  Hope someone can help!

John