Fix some leftover control reaches end of non-void function warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147874 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCDisassembler/EDDisassembler.cpp b/lib/MC/MCDisassembler/EDDisassembler.cpp
index 8698335..46869da 100644
--- a/lib/MC/MCDisassembler/EDDisassembler.cpp
+++ b/lib/MC/MCDisassembler/EDDisassembler.cpp
@@ -79,19 +79,18 @@
   case EDDisassembler::kEDAssemblySyntaxX86ATT:
     if (arch == Triple::x86 || arch == Triple::x86_64)
       return 0;
-    else
-      return -1;
+    break;
   case EDDisassembler::kEDAssemblySyntaxX86Intel:
     if (arch == Triple::x86 || arch == Triple::x86_64)
       return 1;
-    else
-      return -1;
+    break;
   case EDDisassembler::kEDAssemblySyntaxARMUAL:
     if (arch == Triple::arm || arch == Triple::thumb)
       return 0;
-    else
-      return -1;
+    break;
   }
+
+  return -1;
 }
 
 EDDisassembler *EDDisassembler::getDisassembler(Triple::ArchType arch,