Fix uninitialized nresults and RGB

BUG=387785
R=palmer@chromium.org

Review URL: https://codereview.chromium.org/362403002

core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp

diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
index 3dad6be..867b245 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
@@ -1027,7 +1027,7 @@
         return FALSE;
     }
     CFX_FixedBufGrow<FX_FLOAT, 16> results(m_pFunc->CountOutputs());
-    int nresults;
+    int nresults = 0;
     m_pFunc->Call(pBuf, m_nComponents, results, nresults);
     if (nresults == 0) {
         return FALSE;

core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp

diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
index 4b4f929..0bf6311 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
@@ -710,7 +710,7 @@
             pObject2Bitmap->Transform(coords[i].x, coords[i].y);
         }
         for (i = iStartColor; i < 4; i ++) {
-            FX_FLOAT r, g, b;
+            FX_FLOAT r=0.0f, g=0.0f, b=0.0f;
             stream.GetColor(r, g, b);
             patch.patch_colors[i].comp[0] = (FX_INT32)(r * 255);
             patch.patch_colors[i].comp[1] = (FX_INT32)(g * 255);