Roll logic into a single if statement, per David's suggestion.

llvm-svn: 156502
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index 395d22e..40c4ae1 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -528,10 +528,9 @@
 
     // If no OSX or iOS target has been specified and we're compiling for armv7,
     // go ahead as assume we're targeting iOS.
-    if (OSXTarget.empty() && iOSTarget.empty())
-      if (getDarwinArchName(Args) == "armv7") {
+    if (OSXTarget.empty() && iOSTarget.empty() &&
+        getDarwinArchName(Args) == "armv7")
         iOSTarget = iOSVersionMin;
-      }
 
     // Handle conflicting deployment targets
     //