Fix corrupt patch: add leading space to blank context lines in win7.patch

patches/boringssl/win7.patch

@@ -2,12 +2,12 @@
 +++ b/crypto/rand/windows.cc
 @@ -23,6 +23,7 @@
  #include <stdlib.h>
-
+ 
  #include <windows.h>
 +#include <wincrypt.h>
-
+ 
  using namespace bssl;
-
+ 
 @@ -59,14 +59,38 @@
  // See: https://learn.microsoft.com/en-us/windows/win32/seccng/processprng
  typedef BOOL(WINAPI *ProcessPrngFunction)(PBYTE pbData, SIZE_T cbData);
@@ -18,7 +18,7 @@
 +{
 +  return CryptGenRandom(g_hCryptProv, cbData, pbData);
 +}
-
+ 
  static void init_processprng() {
    HMODULE hmod = LoadLibraryW(L"bcryptprimitives");
 -  if (hmod == nullptr) {
@@ -53,3 +53,5 @@
 +
 +  abort();
  }
+ 
+