[llvm-nm] Remove redundant check for file validity.

We already perform it at the beginning of the function so we can't
arrive here with an invalid object. Also, add a test so that bugs
won't sneak in the future.

llvm-svn: 258982

1 files changed, 0 insertions, 2 deletions

diff --git a/llvm/tools/llvm-nm/llvm-nm.cpp b/llvm/tools/llvm-nm/llvm-nm.cpp
index 26d1e182abc..00a6cacf78f 100644
--- a/llvm/tools/llvm-nm/llvm-nm.cpp
+++ b/llvm/tools/llvm-nm/llvm-nm.cpp
@@ -1240,9 +1240,7 @@ static void dumpSymbolNamesFromFile(std::string &Filename) {
     if (!checkMachOAndArchFlags(O, Filename))
       return;
     dumpSymbolNamesFromObject(*O, true);
-    return;
   }
-  error("unrecognizable file type", Filename);
 }
 
 int main(int argc, char **argv) {