Fix LLVMRustInlineAsmVerify return type mismatch

Author: varkor

src/librustc_codegen_llvm/builder.rs

@@ -756,7 +756,7 @@ impl Builder<'a, 'll, 'tcx> {
             // Ask LLVM to verify that the constraints are well-formed.
             let constraints_ok = llvm::LLVMRustInlineAsmVerify(fty, cons);
             debug!("Constraint verification result: {:?}", constraints_ok);
-            if constraints_ok == llvm::True {
+            if constraints_ok {
                 let v = llvm::LLVMRustInlineAsm(
                     fty, asm, cons, volatile, alignstack, dia);
                 Some(self.call(v, inputs, None))

src/librustc_codegen_llvm/llvm/ffi.rs

@@ -1212,8 +1212,8 @@ extern "C" {
                              Dialect: AsmDialect)
                              -> &Value;
     pub fn LLVMRustInlineAsmVerify(Ty: &Type,
-                             Constraints: *const c_char)
-                             -> Bool;
+                                   Constraints: *const c_char)
+                                   -> bool;
 
     pub fn LLVMRustDebugMetadataVersion() -> u32;
     pub fn LLVMRustVersionMajor() -> u32;