[mips] Simplify boolean expressions in Mips target with `clang-tidy`

No functional changes.

Patch by Richard Thomson.

Differential Revision: http://reviews.llvm.org/D8522

llvm-svn: 233065
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
index a832698..43b4c2c 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
@@ -378,9 +378,7 @@
                                              const MCSubtargetInfo &STI)
     : MipsTargetStreamer(S), MicroMipsEnabled(false), STI(STI) {
   MCAssembler &MCA = getStreamer().getAssembler();
-  Pic = (MCA.getContext().getObjectFileInfo()->getRelocM() == Reloc::PIC_)
-            ? true
-            : false;
+  Pic = MCA.getContext().getObjectFileInfo()->getRelocM() == Reloc::PIC_;
 
   const FeatureBitset &Features = STI.getFeatureBits();