shithub: libvpx

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ensure ctx is used

Rather that (void)ing ctx, document the case where it might not be used.

BUG=webm:1612

Change-Id: I1f1ba9a3d52b43a6987dbe3afec96fa17101e3bf

--- a/vp8/common/generic/systemdependent.c

+++ b/vp8/common/generic/systemdependent.c

@@ -88,8 +88,6 @@

 void vp8_machine_specific_config(VP8_COMMON *ctx) {

 #if CONFIG_MULTITHREAD

   ctx->processor_core_count = get_cpu_count();

-#else

-  (void)ctx;

 #endif /* CONFIG_MULTITHREAD */

 #if VPX_ARCH_ARM

@@ -98,5 +96,8 @@

   ctx->cpu_caps = x86_simd_caps();

 #elif VPX_ARCH_PPC

   ctx->cpu_caps = ppc_simd_caps();

+#else

+  // generic-gnu targets.

+  ctx->cpu_caps = 0;

 #endif

 }