Fix pointer signedness and missing declarations warnings.

dlls/tapi32/line.c

@@ -662,7 +662,7 @@ DWORD WINAPI lineGetTranslateCapsA(HLINEAPP hLineApp, DWORD dwAPIVersion,
         if( RegCreateKeyA( hkLocations, "Location1", &hsubkey)
                 == ERROR_SUCCESS) {
             DWORD dwval;
-            BYTE buf[10];
+            char buf[10];
             numlocations = 1;
             length += sizeof(LINELOCATIONENTRY) + 20 ;
             RegSetValueExA( hsubkey, "AreaCode", 0, REG_SZ, (LPBYTE)"010", 4);

include/tapi.h

@@ -957,6 +957,7 @@ DWORD WINAPI lineSetupConferenceA(HCALL,HLINE,LPHCALL,LPHCALL,DWORD,LPLINECALLPA
 DWORD WINAPI lineSetupTransferA(HCALL,LPHCALL,LPLINECALLPARAMS);
 DWORD WINAPI lineTranslateAddressA(HLINEAPP,DWORD,DWORD,LPCSTR,DWORD,DWORD,LPLINETRANSLATEOUTPUT);
 DWORD WINAPI lineTranslateDialogA(HLINEAPP,DWORD,DWORD,HWND,LPCSTR);
+DWORD WINAPI lineUnhold(HCALL);
 DWORD WINAPI lineUnparkA(HLINE,DWORD,LPHCALL,LPCSTR);
 
 /* phone functions */