clang/win: Fix -Wmissing-braces warning.

sandbox/win/src/process_mitigations.cc

Index: sandbox/win/src/process_mitigations.cc
diff --git a/sandbox/win/src/process_mitigations.cc b/sandbox/win/src/process_mitigations.cc
index 67999a42a7f4219a9b0566e5e54745c2af048179..ba191d6ba6f86113a9efee080466dd7bf827b1df 100644
--- a/sandbox/win/src/process_mitigations.cc
+++ b/sandbox/win/src/process_mitigations.cc
@@ -179,7 +179,7 @@ bool ApplyProcessMitigationsToCurrentProcess(MitigationFlags flags) {
 
   // Enable font policies.
   if (flags & MITIGATION_NONSYSTEM_FONT_DISABLE) {
-    PROCESS_MITIGATION_FONT_DISABLE_POLICY policy = {0};
+    PROCESS_MITIGATION_FONT_DISABLE_POLICY policy = {};
     policy.DisableNonSystemFonts = true;
 
     if (!set_process_mitigation_policy(ProcessFontDisablePolicy, &policy,
@@ -195,7 +195,7 @@ bool ApplyProcessMitigationsToCurrentProcess(MitigationFlags flags) {
   // Enable image load policies.
   if (flags & MITIGATION_IMAGE_LOAD_NO_REMOTE ||
       flags & MITIGATION_IMAGE_LOAD_NO_LOW_LABEL) {
-    PROCESS_MITIGATION_IMAGE_LOAD_POLICY policy = {0};
+    PROCESS_MITIGATION_IMAGE_LOAD_POLICY policy = {};
     if (flags & MITIGATION_IMAGE_LOAD_NO_REMOTE)
       policy.NoRemoteImages = true;
     if (flags & MITIGATION_IMAGE_LOAD_NO_LOW_LABEL)