qga: fix missing static and prototypes windows warnings

Reported by clang++, but not by g++.

../qga/vss-win32/provider.cpp:48:6: error: no previous prototype for function 'LockModule' [-Werror,-Wmissing-prototypes]
   48 | void LockModule(BOOL lock)
      |      ^
../qga/vss-win32/provider.cpp:48:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   48 | void LockModule(BOOL lock)
      | ^
      | static
../qga/vss-win32/provider.cpp:531:13: error: no previous prototype for function 'DllMain' [-Werror,-Wmissing-prototypes]
  531 | BOOL WINAPI DllMain(HINSTANCE hinstDll, DWORD dwReason, LPVOID lpReserved)
      |             ^
../qga/vss-win32/provider.cpp:531:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
  531 | BOOL WINAPI DllMain(HINSTANCE hinstDll, DWORD dwReason, LPVOID lpReserved)
      | ^
      | static

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Link: https://lore.kernel.org/r/20241031040426.772604-7-pierrick.bouvier@linaro.org
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/qga/vss-win32/install.cpp b/qga/vss-win32/install.cpp
index 84944133f7..5cea5bcf74 100644
--- a/qga/vss-win32/install.cpp
+++ b/qga/vss-win32/install.cpp
@@ -39,7 +39,7 @@ const GUID CLSID_WbemLocator = { 0x4590f811, 0x1d3a, 0x11d0,
 const GUID IID_IWbemLocator = { 0xdc12a687, 0x737f, 0x11cf,
     {0x88, 0x4d, 0x00, 0xaa, 0x00, 0x4b, 0x2e, 0x24} };
 
-void errmsg(DWORD err, const char *text)
+static void errmsg(DWORD err, const char *text)
 {
     /*
      * `text' contains function call statement when errmsg is called via chk().
@@ -242,6 +242,7 @@ out:
 }
 
 /* Unregister this module from COM+ Applications Catalog */
+STDAPI COMUnregister(void);
 STDAPI COMUnregister(void)
 {
     qga_debug_begin;
@@ -256,6 +257,7 @@ out:
 }
 
 /* Register this module to COM+ Applications Catalog */
+STDAPI COMRegister(void);
 STDAPI COMRegister(void)
 {
     qga_debug_begin;
@@ -380,11 +382,13 @@ out:
     return hr;
 }
 
+STDAPI_(void) CALLBACK DLLCOMRegister(HWND, HINSTANCE, LPSTR, int);
 STDAPI_(void) CALLBACK DLLCOMRegister(HWND, HINSTANCE, LPSTR, int)
 {
     COMRegister();
 }
 
+STDAPI_(void) CALLBACK DLLCOMUnregister(HWND, HINSTANCE, LPSTR, int);
 STDAPI_(void) CALLBACK DLLCOMUnregister(HWND, HINSTANCE, LPSTR, int)
 {
     COMUnregister();