Demangle: Fix comment typos to cycle bots

Author: nico

libcxxabi/src/demangle/ItaniumDemangle.h

@@ -3319,7 +3319,7 @@ AbstractManglingParser<Derived, Alloc>::parseOperatorEncoding() {
     return nullptr;
 
   // We can't use lower_bound as that can link to symbols in the C++ library,
-  // and this must remain independant of that.
+  // and this must remain independent of that.
   size_t lower = 0u, upper = NumOps - 1; // Inclusive bounds.
   while (upper != lower) {
     size_t middle = (upper + lower) / 2;

llvm/include/llvm/Demangle/ItaniumDemangle.h

@@ -3318,7 +3318,7 @@ AbstractManglingParser<Derived, Alloc>::parseOperatorEncoding() {
     return nullptr;
 
   // We can't use lower_bound as that can link to symbols in the C++ library,
-  // and this must remain independant of that.
+  // and this must remain independent of that.
   size_t lower = 0u, upper = NumOps - 1; // Inclusive bounds.
   while (upper != lower) {
     size_t middle = (upper + lower) / 2;

llvm/include/llvm/Demangle/MicrosoftDemangleNodes.h

@@ -332,7 +332,7 @@ struct FunctionSignatureNode : public TypeNode {
   // The function's calling convention.
   CallingConv CallConvention = CallingConv::None;
 
-  // Function flags (gloabl, public, etc)
+  // Function flags (global, public, etc)
   FuncClass FunctionClass = FC_Global;
 
   FunctionRefQualifier RefQualifier = FunctionRefQualifier::None;

llvm/lib/Demangle/RustDemangle.cpp

@@ -870,7 +870,7 @@ Identifier Demangler::parseIdentifier() {
 // Parses optional base 62 number. The presence of a number is determined using
 // Tag. Returns 0 when tag is absent and parsed value + 1 otherwise
 //
-// This function is indended for parsing disambiguators and binders which when
+// This function is intended for parsing disambiguators and binders which when
 // not present have their value interpreted as 0, and otherwise as decoded
 // value + 1. For example for binders, value for "G_" is 1, for "G0_" value is
 // 2. When "G" is absent value is 0.