Fix formatting error in test output

BUG=skia:

Change-Id: I36824a4a3fcae3a75157706b769047a82cb3c289
Reviewed-on: https://skia-review.googlesource.com/9728
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
diff --git a/tests/ProcessorTest.cpp b/tests/ProcessorTest.cpp
index 5c2efd1..d0f2fae 100644
--- a/tests/ProcessorTest.cpp
+++ b/tests/ProcessorTest.cpp
@@ -377,7 +377,7 @@
                         if (!legalColorModulation && !legalAlphaModulation) {
                             ERRORF(reporter,
                                    "\"Modulating\" processor %s made color/alpha value larger. "
-                                   "Input: 0x%0x8, Output: 0x%08x.",
+                                   "Input: 0x%08x, Output: 0x%08x.",
                                    fp->name(), input, output);
                             passing = false;
                         }
@@ -408,7 +408,7 @@
                         !GrColorIsOpaque(output)) {
                         ERRORF(reporter,
                                "Processor %s claimed opaqueness is preserved but it is not. Input: "
-                               "0x%0x8, Output: 0x%08x.",
+                               "0x%08x, Output: 0x%08x.",
                                fp->name(), input, output);
                         passing = false;
                     }