hhctrl.ocx: Make some functions static.

dlls/hhctrl.ocx/chm.c

diff --git a/dlls/hhctrl.ocx/chm.c b/dlls/hhctrl.ocx/chm.c
index 900d63c..44438d6 100644
--- a/dlls/hhctrl.ocx/chm.c
+++ b/dlls/hhctrl.ocx/chm.c
@@ -46,7 +46,7 @@
 }
 
 /* Reads a string from the #STRINGS section in the CHM file */
-LPWSTR CHM_ReadString(CHMInfo *pChmInfo, DWORD dwOffset)
+static LPWSTR CHM_ReadString(CHMInfo *pChmInfo, DWORD dwOffset)
 {
     LARGE_INTEGER liOffset;
     IStorage *pStorage = pChmInfo->pStorage;

dlls/hhctrl.ocx/help.c

diff --git a/dlls/hhctrl.ocx/help.c b/dlls/hhctrl.ocx/help.c
index 7bf35bc..2c288b6 100644
--- a/dlls/hhctrl.ocx/help.c
+++ b/dlls/hhctrl.ocx/help.c
@@ -148,7 +148,7 @@
         return;
 }
 
-LRESULT CALLBACK SizeBar_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
+static LRESULT CALLBACK SizeBar_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 {
     switch (message)
     {
@@ -264,7 +264,7 @@
     EndPaint(hWnd, &ps);
 }
 
-LRESULT CALLBACK Child_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
+static LRESULT CALLBACK Child_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 {
     switch (message)
     {
@@ -619,7 +619,7 @@
     WB_ResizeBrowser(pHHInfo->pWBInfo, rc.right - dwSize, rc.bottom - dwSize);
 }
 
-LRESULT CALLBACK Help_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
+static LRESULT CALLBACK Help_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 {
     PAINTSTRUCT ps;
     HDC hdc;