Fix corrupted win7.patch format for BoringSSL update

patches/boringssl/win7.patch

@@ -1,5 +1,3 @@
-diff --git a/crypto/rand/windows.cc b/crypto/rand/windows.cc
-index 1234567..abcdefg 100644
 --- a/crypto/rand/windows.cc
 +++ b/crypto/rand/windows.cc
 @@ -24,6 +24,7 @@
@@ -10,7 +8,7 @@ index 1234567..abcdefg 100644
 
  #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) && \
      !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
-@@ -55,16 +56,40 @@ void CRYPTO_sysrand(uint8_t *out, size_t requested) {
+@@ -57,16 +58,40 @@
  // See: https://learn.microsoft.com/en-us/windows/win32/seccng/processprng
  typedef BOOL (WINAPI *ProcessPrngFunction)(PBYTE pbData, SIZE_T cbData);
  static ProcessPrngFunction g_processprng_fn = nullptr;