[misc] display Windows Update Build Revision (UBR) when available

Yet another link in the long chain of Microsoft making it UNFATHOMABLY DIFFICULT
to figure out what version of Windows an application is actually running on...

src/rufus.rc

@@ -33,7 +33,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
 IDD_DIALOG DIALOGEX 12, 12, 232, 326
 STYLE DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU
 EXSTYLE WS_EX_ACCEPTFILES
-CAPTION "Rufus 3.9.1586"
+CAPTION "Rufus 3.9.1587"
 FONT 9, "Segoe UI Symbol", 400, 0, 0x0
 BEGIN
     LTEXT           "Drive Properties",IDS_DRIVE_PROPERTIES_TXT,8,6,53,12,NOT WS_GROUP
@@ -394,8 +394,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 3,9,1586,0
- PRODUCTVERSION 3,9,1586,0
+ FILEVERSION 3,9,1587,0
+ PRODUCTVERSION 3,9,1587,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -413,13 +413,13 @@ BEGIN
             VALUE "Comments", "https://rufus.ie"
             VALUE "CompanyName", "Akeo Consulting"
             VALUE "FileDescription", "Rufus"
-            VALUE "FileVersion", "3.9.1586"
+            VALUE "FileVersion", "3.9.1587"
             VALUE "InternalName", "Rufus"
             VALUE "LegalCopyright", "� 2011-2019 Pete Batard (GPL v3)"
             VALUE "LegalTrademarks", "https://www.gnu.org/licenses/gpl-3.0.html"
             VALUE "OriginalFilename", "rufus-3.9.exe"
             VALUE "ProductName", "Rufus"
-            VALUE "ProductVersion", "3.9.1586"
+            VALUE "ProductVersion", "3.9.1587"
         END
     END
     BLOCK "VarFileInfo"

src/stdfn.c

@@ -351,14 +351,17 @@ void GetWindowsVersion(void)
 	else
 		safe_sprintf(vptr, vlen, "%s %s", w, w64);
 
-	// Add the build number for Windows 8.0 and later
+	// Add the build number (including UBR if available) for Windows 8.0 and later
 	nWindowsBuildNumber = vi.dwBuildNumber;
 	if (nWindowsVersion >= 0x62) {
+		int nUbr = ReadRegistryKey32(REGKEY_HKLM, "Software\\Microsoft\\Windows NT\\CurrentVersion\\UBR");
 		vptr = &WindowsVersionStr[safe_strlen(WindowsVersionStr)];
 		vlen = sizeof(WindowsVersionStr) - safe_strlen(WindowsVersionStr) - 1;
-		safe_sprintf(vptr, vlen, " (Build %d)", nWindowsBuildNumber);
+		if (nUbr > 0)
+			safe_sprintf(vptr, vlen, " (Build %d.%d)", nWindowsBuildNumber, nUbr);
+		else
+			safe_sprintf(vptr, vlen, " (Build %d)", nWindowsBuildNumber);
 	}
-
 }
 
 /*