Fixed static analyzers warnings with bool literals (#1775)

* Use `false` instead of `0` for a bool literal.
* Simplify calls to RadioButton to not need bool literals.

imgui.cpp

@@ -3419,7 +3419,7 @@ void ImGui::NewFrameUpdateHoveredWindowAndCaptureFlags()
         g.IO.WantCaptureKeyboard = true;
 
     // Update io.WantTextInput flag, this is to allow systems without a keyboard (e.g. mobile, hand-held) to show a software keyboard if possible
-    g.IO.WantTextInput = (g.WantTextInputNextFrame != -1) ? (g.WantTextInputNextFrame != 0) : 0;
+    g.IO.WantTextInput = (g.WantTextInputNextFrame != -1) ? (g.WantTextInputNextFrame != 0) : false;
 }
 
 void ImGui::NewFrame()
@@ -11593,15 +11593,15 @@ void ImGui::ColorEditOptionsPopup(const float* col, ImGuiColorEditFlags flags)
     ImGuiColorEditFlags opts = g.ColorEditOptions;
     if (allow_opt_inputs)
     {
-        if (RadioButton("RGB", (opts & ImGuiColorEditFlags_RGB) ? 1 : 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_RGB;
-        if (RadioButton("HSV", (opts & ImGuiColorEditFlags_HSV) ? 1 : 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HSV;
-        if (RadioButton("HEX", (opts & ImGuiColorEditFlags_HEX) ? 1 : 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HEX;
+        if (RadioButton("RGB", (opts & ImGuiColorEditFlags_RGB) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_RGB;
+        if (RadioButton("HSV", (opts & ImGuiColorEditFlags_HSV) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HSV;
+        if (RadioButton("HEX", (opts & ImGuiColorEditFlags_HEX) != 0)) opts = (opts & ~ImGuiColorEditFlags__InputsMask) | ImGuiColorEditFlags_HEX;
     }
     if (allow_opt_datatype)
     {
         if (allow_opt_inputs) Separator();
-        if (RadioButton("0..255",     (opts & ImGuiColorEditFlags_Uint8) ? 1 : 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Uint8;
-        if (RadioButton("0.00..1.00", (opts & ImGuiColorEditFlags_Float) ? 1 : 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Float;
+        if (RadioButton("0..255",     (opts & ImGuiColorEditFlags_Uint8) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Uint8;
+        if (RadioButton("0.00..1.00", (opts & ImGuiColorEditFlags_Float) != 0)) opts = (opts & ~ImGuiColorEditFlags__DataTypeMask) | ImGuiColorEditFlags_Float;
     }
 
     if (allow_opt_inputs || allow_opt_datatype)